//
// Variables
// --------------------------------------------------
//== Colors
//
//## Gray and brand colors for use across Bootstrap.
@gray-darker: lighten(#000, 13.5%); // #222
@gray-dark: lighten(#000, 20%); // #333
@gray: lighten(#000, 33.5%); // #555
@gray-light: lighten(#000, 60%); // #999
@gray-lighter: lighten(#000, 93.5%); // #eee
@brand-primary: #428bca;
@brand-success: #5cb85c;
@brand-info: #5bc0de;
@brand-warning: #f0ad4e;
@brand-danger: #d9534f;
//== Scaffolding
//
//## Settings for some of the most global styles.
//** Background color for `
`.
@body-bg: #fff;
//** Global text color on ``.
@text-color: @gray-dark;
//** Global textual link color.
@link-color: @brand-primary;
//** Link hover color set via `darken()` function.
@link-hover-color: darken(@link-color, 15%);
//== Typography
//
//## Font, line-height, and color for body text, headings, and more.
@font-family-sans-serif: "Helvetica Neue", Helvetica, Arial, sans-serif;
@font-family-serif: Georgia, "Times New Roman", Times, serif;
//** Default monospace fonts for ``, ``, and `
`.
@font-family-monospace: Menlo, Monaco, Consolas, "Courier New", monospace;
@font-family-base: @font-family-sans-serif;
@font-size-base: 14px;
@font-size-large: ceil((@font-size-base * 1.25)); // ~18px
@font-size-small: ceil((@font-size-base * 0.85)); // ~12px
@font-size-h1: floor((@font-size-base * 2.6)); // ~36px
@font-size-h2: floor((@font-size-base * 2.15)); // ~30px
@font-size-h3: ceil((@font-size-base * 1.7)); // ~24px
@font-size-h4: ceil((@font-size-base * 1.25)); // ~18px
@font-size-h5: @font-size-base;
@font-size-h6: ceil((@font-size-base * 0.85)); // ~12px
//** Unit-less `line-height` for use in components like buttons.
@line-height-base: 1.428571429; // 20/14
//** Computed "line-height" (`font-size` * `line-height`) for use with `margin`, `padding`, etc.
@line-height-computed: floor((@font-size-base * @line-height-base)); // ~20px
//** By default, this inherits from the ``.
@headings-font-family: inherit;
@headings-font-weight: 500;
@headings-line-height: 1.1;
@headings-color: inherit;
//== Iconography
//
//## Specify custom location and filename of the included Glyphicons icon font. Useful for those including Bootstrap via Bower.
//** Load fonts from this directory.
@icon-font-path: "../fonts/";
//** File name for all font files.
@icon-font-name: "glyphicons-halflings-regular";
//** Element ID within SVG icon file.
@icon-font-svg-id: "glyphicons_halflingsregular";
//== Components
//
//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
@padding-base-vertical: 6px;
@padding-base-horizontal: 12px;
@padding-large-vertical: 10px;
@padding-large-horizontal: 16px;
@padding-small-vertical: 5px;
@padding-small-horizontal: 10px;
@padding-xs-vertical: 1px;
@padding-xs-horizontal: 5px;
@line-height-large: 1.33;
@line-height-small: 1.5;
@border-radius-base: 4px;
@border-radius-large: 6px;
@border-radius-small: 3px;
//** Global color for active items (e.g., navs or dropdowns).
@component-active-color: #fff;
//** Global background color for active items (e.g., navs or dropdowns).
@component-active-bg: @brand-primary;
//** Width of the `border` for generating carets that indicator dropdowns.
@caret-width-base: 4px;
//** Carets increase slightly in size for larger components.
@caret-width-large: 5px;
//== Tables
//
//## Customizes the `.table` component with basic values, each used across all table variations.
//** Padding for `
`s and `
`s.
@table-cell-padding: 8px;
//** Padding for cells in `.table-condensed`.
@table-condensed-cell-padding: 5px;
//** Default background color used for all tables.
@table-bg: transparent;
//** Background color used for `.table-striped`.
@table-bg-accent: #f9f9f9;
//** Background color used for `.table-hover`.
@table-bg-hover: #f5f5f5;
@table-bg-active: @table-bg-hover;
//** Border color for table and cell borders.
@table-border-color: #ddd;
//== Buttons
//
//## For each of Bootstrap's buttons, define text, background and border color.
@btn-font-weight: normal;
@btn-default-color: #333;
@btn-default-bg: #fff;
@btn-default-border: #ccc;
@btn-primary-color: #fff;
@btn-primary-bg: @brand-primary;
@btn-primary-border: darken(@btn-primary-bg, 5%);
@btn-success-color: #fff;
@btn-success-bg: @brand-success;
@btn-success-border: darken(@btn-success-bg, 5%);
@btn-info-color: #fff;
@btn-info-bg: @brand-info;
@btn-info-border: darken(@btn-info-bg, 5%);
@btn-warning-color: #fff;
@btn-warning-bg: @brand-warning;
@btn-warning-border: darken(@btn-warning-bg, 5%);
@btn-danger-color: #fff;
@btn-danger-bg: @brand-danger;
@btn-danger-border: darken(@btn-danger-bg, 5%);
@btn-link-disabled-color: @gray-light;
//== Forms
//
//##
//** `` background color
@input-bg: #fff;
//** `` background color
@input-bg-disabled: @gray-lighter;
//** Text color for ``s
@input-color: @gray;
//** `` border color
@input-border: #ccc;
//** `` border radius
@input-border-radius: @border-radius-base;
//** Border color for inputs on focus
@input-border-focus: #66afe9;
//** Placeholder text color
@input-color-placeholder: @gray-light;
//** Default `.form-control` height
@input-height-base: (@line-height-computed + (@padding-base-vertical * 2) + 2);
//** Large `.form-control` height
@input-height-large: (ceil(@font-size-large * @line-height-large) + (@padding-large-vertical * 2) + 2);
//** Small `.form-control` height
@input-height-small: (floor(@font-size-small * @line-height-small) + (@padding-small-vertical * 2) + 2);
@legend-color: @gray-dark;
@legend-border-color: #e5e5e5;
//** Background color for textual input addons
@input-group-addon-bg: @gray-lighter;
//** Border color for textual input addons
@input-group-addon-border-color: @input-border;
//== Dropdowns
//
//## Dropdown menu container and contents.
//** Background for the dropdown menu.
@dropdown-bg: #fff;
//** Dropdown menu `border-color`.
@dropdown-border: rgba(0,0,0,.15);
//** Dropdown menu `border-color` **for IE8**.
@dropdown-fallback-border: #ccc;
//** Divider color for between dropdown items.
@dropdown-divider-bg: #e5e5e5;
//** Dropdown link text color.
@dropdown-link-color: @gray-dark;
//** Hover color for dropdown links.
@dropdown-link-hover-color: darken(@gray-dark, 5%);
//** Hover background for dropdown links.
@dropdown-link-hover-bg: #f5f5f5;
//** Active dropdown menu item text color.
@dropdown-link-active-color: @component-active-color;
//** Active dropdown menu item background color.
@dropdown-link-active-bg: @component-active-bg;
//** Disabled dropdown menu item background color.
@dropdown-link-disabled-color: @gray-light;
//** Text color for headers within dropdown menus.
@dropdown-header-color: @gray-light;
//** Deprecated `@dropdown-caret-color` as of v3.1.0
@dropdown-caret-color: #000;
//-- Z-index master list
//
// Warning: Avoid customizing these values. They're used for a bird's eye view
// of components dependent on the z-axis and are designed to all work together.
//
// Note: These variables are not generated into the Customizer.
@zindex-navbar: 1000;
@zindex-dropdown: 1000;
@zindex-popover: 1060;
@zindex-tooltip: 1070;
@zindex-navbar-fixed: 1030;
@zindex-modal-background: 1040;
@zindex-modal: 1050;
//== Media queries breakpoints
//
//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
// Extra small screen / phone
//** Deprecated `@screen-xs` as of v3.0.1
@screen-xs: 480px;
//** Deprecated `@screen-xs-min` as of v3.2.0
@screen-xs-min: @screen-xs;
//** Deprecated `@screen-phone` as of v3.0.1
@screen-phone: @screen-xs-min;
// Small screen / tablet
//** Deprecated `@screen-sm` as of v3.0.1
@screen-sm: 768px;
@screen-sm-min: @screen-sm;
//** Deprecated `@screen-tablet` as of v3.0.1
@screen-tablet: @screen-sm-min;
// Medium screen / desktop
//** Deprecated `@screen-md` as of v3.0.1
@screen-md: 992px;
@screen-md-min: @screen-md;
//** Deprecated `@screen-desktop` as of v3.0.1
@screen-desktop: @screen-md-min;
// Large screen / wide desktop
//** Deprecated `@screen-lg` as of v3.0.1
@screen-lg: 1200px;
@screen-lg-min: @screen-lg;
//** Deprecated `@screen-lg-desktop` as of v3.0.1
@screen-lg-desktop: @screen-lg-min;
// So media queries don't overlap when required, provide a maximum
@screen-xs-max: (@screen-sm-min - 1);
@screen-sm-max: (@screen-md-min - 1);
@screen-md-max: (@screen-lg-min - 1);
//== Grid system
//
//## Define your custom responsive grid.
//** Number of columns in the grid.
@grid-columns: 12;
//** Padding between columns. Gets divided in half for the left and right.
@grid-gutter-width: 30px;
// Navbar collapse
//** Point at which the navbar becomes uncollapsed.
@grid-float-breakpoint: @screen-sm-min;
//** Point at which the navbar begins collapsing.
@grid-float-breakpoint-max: (@grid-float-breakpoint - 1);
//== Container sizes
//
//## Define the maximum width of `.container` for different screen sizes.
// Small screen / tablet
@container-tablet: ((720px + @grid-gutter-width));
//** For `@screen-sm-min` and up.
@container-sm: @container-tablet;
// Medium screen / desktop
@container-desktop: ((940px + @grid-gutter-width));
//** For `@screen-md-min` and up.
@container-md: @container-desktop;
// Large screen / wide desktop
@container-large-desktop: ((1140px + @grid-gutter-width));
//** For `@screen-lg-min` and up.
@container-lg: @container-large-desktop;
//== Navbar
//
//##
// Basics of a navbar
@navbar-height: 50px;
@navbar-margin-bottom: @line-height-computed;
@navbar-border-radius: @border-radius-base;
@navbar-padding-horizontal: floor((@grid-gutter-width / 2));
@navbar-padding-vertical: ((@navbar-height - @line-height-computed) / 2);
@navbar-collapse-max-height: 340px;
@navbar-default-color: #777;
@navbar-default-bg: #f8f8f8;
@navbar-default-border: darken(@navbar-default-bg, 6.5%);
// Navbar links
@navbar-default-link-color: #777;
@navbar-default-link-hover-color: #333;
@navbar-default-link-hover-bg: transparent;
@navbar-default-link-active-color: #555;
@navbar-default-link-active-bg: darken(@navbar-default-bg, 6.5%);
@navbar-default-link-disabled-color: #ccc;
@navbar-default-link-disabled-bg: transparent;
// Navbar brand label
@navbar-default-brand-color: @navbar-default-link-color;
@navbar-default-brand-hover-color: darken(@navbar-default-brand-color, 10%);
@navbar-default-brand-hover-bg: transparent;
// Navbar toggle
@navbar-default-toggle-hover-bg: #ddd;
@navbar-default-toggle-icon-bar-bg: #888;
@navbar-default-toggle-border-color: #ddd;
// Inverted navbar
// Reset inverted navbar basics
@navbar-inverse-color: @gray-light;
@navbar-inverse-bg: #222;
@navbar-inverse-border: darken(@navbar-inverse-bg, 10%);
// Inverted navbar links
@navbar-inverse-link-color: @gray-light;
@navbar-inverse-link-hover-color: #fff;
@navbar-inverse-link-hover-bg: transparent;
@navbar-inverse-link-active-color: @navbar-inverse-link-hover-color;
@navbar-inverse-link-active-bg: darken(@navbar-inverse-bg, 10%);
@navbar-inverse-link-disabled-color: #444;
@navbar-inverse-link-disabled-bg: transparent;
// Inverted navbar brand label
@navbar-inverse-brand-color: @navbar-inverse-link-color;
@navbar-inverse-brand-hover-color: #fff;
@navbar-inverse-brand-hover-bg: transparent;
// Inverted navbar toggle
@navbar-inverse-toggle-hover-bg: #333;
@navbar-inverse-toggle-icon-bar-bg: #fff;
@navbar-inverse-toggle-border-color: #333;
//== Navs
//
//##
//=== Shared nav styles
@nav-link-padding: 10px 15px;
@nav-link-hover-bg: @gray-lighter;
@nav-disabled-link-color: @gray-light;
@nav-disabled-link-hover-color: @gray-light;
@nav-open-link-hover-color: #fff;
//== Tabs
@nav-tabs-border-color: #ddd;
@nav-tabs-link-hover-border-color: @gray-lighter;
@nav-tabs-active-link-hover-bg: @body-bg;
@nav-tabs-active-link-hover-color: @gray;
@nav-tabs-active-link-hover-border-color: #ddd;
@nav-tabs-justified-link-border-color: #ddd;
@nav-tabs-justified-active-link-border-color: @body-bg;
//== Pills
@nav-pills-border-radius: @border-radius-base;
@nav-pills-active-link-hover-bg: @component-active-bg;
@nav-pills-active-link-hover-color: @component-active-color;
//== Pagination
//
//##
@pagination-color: @link-color;
@pagination-bg: #fff;
@pagination-border: #ddd;
@pagination-hover-color: @link-hover-color;
@pagination-hover-bg: @gray-lighter;
@pagination-hover-border: #ddd;
@pagination-active-color: #fff;
@pagination-active-bg: @brand-primary;
@pagination-active-border: @brand-primary;
@pagination-disabled-color: @gray-light;
@pagination-disabled-bg: #fff;
@pagination-disabled-border: #ddd;
//== Pager
//
//##
@pager-bg: @pagination-bg;
@pager-border: @pagination-border;
@pager-border-radius: 15px;
@pager-hover-bg: @pagination-hover-bg;
@pager-active-bg: @pagination-active-bg;
@pager-active-color: @pagination-active-color;
@pager-disabled-color: @pagination-disabled-color;
//== Jumbotron
//
//##
@jumbotron-padding: 30px;
@jumbotron-color: inherit;
@jumbotron-bg: @gray-lighter;
@jumbotron-heading-color: inherit;
@jumbotron-font-size: ceil((@font-size-base * 1.5));
//== Form states and alerts
//
//## Define colors for form feedback states and, by default, alerts.
@state-success-text: #3c763d;
@state-success-bg: #dff0d8;
@state-success-border: darken(spin(@state-success-bg, -10), 5%);
@state-info-text: #31708f;
@state-info-bg: #d9edf7;
@state-info-border: darken(spin(@state-info-bg, -10), 7%);
@state-warning-text: #8a6d3b;
@state-warning-bg: #fcf8e3;
@state-warning-border: darken(spin(@state-warning-bg, -10), 5%);
@state-danger-text: #a94442;
@state-danger-bg: #f2dede;
@state-danger-border: darken(spin(@state-danger-bg, -10), 5%);
//== Tooltips
//
//##
//** Tooltip max width
@tooltip-max-width: 200px;
//** Tooltip text color
@tooltip-color: #fff;
//** Tooltip background color
@tooltip-bg: #000;
@tooltip-opacity: .9;
//** Tooltip arrow width
@tooltip-arrow-width: 5px;
//** Tooltip arrow color
@tooltip-arrow-color: @tooltip-bg;
//== Popovers
//
//##
//** Popover body background color
@popover-bg: #fff;
//** Popover maximum width
@popover-max-width: 276px;
//** Popover border color
@popover-border-color: rgba(0,0,0,.2);
//** Popover fallback border color
@popover-fallback-border-color: #ccc;
//** Popover title background color
@popover-title-bg: darken(@popover-bg, 3%);
//** Popover arrow width
@popover-arrow-width: 10px;
//** Popover arrow color
@popover-arrow-color: #fff;
//** Popover outer arrow width
@popover-arrow-outer-width: (@popover-arrow-width + 1);
//** Popover outer arrow color
@popover-arrow-outer-color: fadein(@popover-border-color, 5%);
//** Popover outer arrow fallback color
@popover-arrow-outer-fallback-color: darken(@popover-fallback-border-color, 20%);
//== Labels
//
//##
//** Default label background color
@label-default-bg: @gray-light;
//** Primary label background color
@label-primary-bg: @brand-primary;
//** Success label background color
@label-success-bg: @brand-success;
//** Info label background color
@label-info-bg: @brand-info;
//** Warning label background color
@label-warning-bg: @brand-warning;
//** Danger label background color
@label-danger-bg: @brand-danger;
//** Default label text color
@label-color: #fff;
//** Default text color of a linked label
@label-link-hover-color: #fff;
//== Modals
//
//##
//** Padding applied to the modal body
@modal-inner-padding: 15px;
//** Padding applied to the modal title
@modal-title-padding: 15px;
//** Modal title line-height
@modal-title-line-height: @line-height-base;
//** Background color of modal content area
@modal-content-bg: #fff;
//** Modal content border color
@modal-content-border-color: rgba(0,0,0,.2);
//** Modal content border color **for IE8**
@modal-content-fallback-border-color: #999;
//** Modal backdrop background color
@modal-backdrop-bg: #000;
//** Modal backdrop opacity
@modal-backdrop-opacity: .5;
//** Modal header border color
@modal-header-border-color: #e5e5e5;
//** Modal footer border color
@modal-footer-border-color: @modal-header-border-color;
@modal-lg: 900px;
@modal-md: 600px;
@modal-sm: 300px;
//== Alerts
//
//## Define alert colors, border radius, and padding.
@alert-padding: 15px;
@alert-border-radius: @border-radius-base;
@alert-link-font-weight: bold;
@alert-success-bg: @state-success-bg;
@alert-success-text: @state-success-text;
@alert-success-border: @state-success-border;
@alert-info-bg: @state-info-bg;
@alert-info-text: @state-info-text;
@alert-info-border: @state-info-border;
@alert-warning-bg: @state-warning-bg;
@alert-warning-text: @state-warning-text;
@alert-warning-border: @state-warning-border;
@alert-danger-bg: @state-danger-bg;
@alert-danger-text: @state-danger-text;
@alert-danger-border: @state-danger-border;
//== Progress bars
//
//##
//** Background color of the whole progress component
@progress-bg: #f5f5f5;
//** Progress bar text color
@progress-bar-color: #fff;
//** Default progress bar color
@progress-bar-bg: @brand-primary;
//** Success progress bar color
@progress-bar-success-bg: @brand-success;
//** Warning progress bar color
@progress-bar-warning-bg: @brand-warning;
//** Danger progress bar color
@progress-bar-danger-bg: @brand-danger;
//** Info progress bar color
@progress-bar-info-bg: @brand-info;
//== List group
//
//##
//** Background color on `.list-group-item`
@list-group-bg: #fff;
//** `.list-group-item` border color
@list-group-border: #ddd;
//** List group border radius
@list-group-border-radius: @border-radius-base;
//** Background color of single list items on hover
@list-group-hover-bg: #f5f5f5;
//** Text color of active list items
@list-group-active-color: @component-active-color;
//** Background color of active list items
@list-group-active-bg: @component-active-bg;
//** Border color of active list elements
@list-group-active-border: @list-group-active-bg;
//** Text color for content within active list items
@list-group-active-text-color: lighten(@list-group-active-bg, 40%);
//** Text color of disabled list items
@list-group-disabled-color: @gray-light;
//** Background color of disabled list items
@list-group-disabled-bg: @gray-lighter;
//** Text color for content within disabled list items
@list-group-disabled-text-color: @list-group-disabled-color;
@list-group-link-color: #555;
@list-group-link-hover-color: @list-group-link-color;
@list-group-link-heading-color: #333;
//== Panels
//
//##
@panel-bg: #fff;
@panel-body-padding: 15px;
@panel-heading-padding: 10px 15px;
@panel-footer-padding: @panel-heading-padding;
@panel-border-radius: @border-radius-base;
//** Border color for elements within panels
@panel-inner-border: #ddd;
@panel-footer-bg: #f5f5f5;
@panel-default-text: @gray-dark;
@panel-default-border: #ddd;
@panel-default-heading-bg: #f5f5f5;
@panel-primary-text: #fff;
@panel-primary-border: @brand-primary;
@panel-primary-heading-bg: @brand-primary;
@panel-success-text: @state-success-text;
@panel-success-border: @state-success-border;
@panel-success-heading-bg: @state-success-bg;
@panel-info-text: @state-info-text;
@panel-info-border: @state-info-border;
@panel-info-heading-bg: @state-info-bg;
@panel-warning-text: @state-warning-text;
@panel-warning-border: @state-warning-border;
@panel-warning-heading-bg: @state-warning-bg;
@panel-danger-text: @state-danger-text;
@panel-danger-border: @state-danger-border;
@panel-danger-heading-bg: @state-danger-bg;
//== Thumbnails
//
//##
//** Padding around the thumbnail image
@thumbnail-padding: 4px;
//** Thumbnail background color
@thumbnail-bg: @body-bg;
//** Thumbnail border color
@thumbnail-border: #ddd;
//** Thumbnail border radius
@thumbnail-border-radius: @border-radius-base;
//** Custom text color for thumbnail captions
@thumbnail-caption-color: @text-color;
//** Padding around the thumbnail caption
@thumbnail-caption-padding: 9px;
//== Wells
//
//##
@well-bg: #f5f5f5;
@well-border: darken(@well-bg, 7%);
//== Badges
//
//##
@badge-color: #fff;
//** Linked badge text color on hover
@badge-link-hover-color: #fff;
@badge-bg: @gray-light;
//** Badge text color in active nav link
@badge-active-color: @link-color;
//** Badge background color in active nav link
@badge-active-bg: #fff;
@badge-font-weight: bold;
@badge-line-height: 1;
@badge-border-radius: 10px;
//== Breadcrumbs
//
//##
@breadcrumb-padding-vertical: 8px;
@breadcrumb-padding-horizontal: 15px;
//** Breadcrumb background color
@breadcrumb-bg: #f5f5f5;
//** Breadcrumb text color
@breadcrumb-color: #ccc;
//** Text color of current page in the breadcrumb
@breadcrumb-active-color: @gray-light;
//** Textual separator for between breadcrumb elements
@breadcrumb-separator: "/";
//== Carousel
//
//##
@carousel-text-shadow: 0 1px 2px rgba(0,0,0,.6);
@carousel-control-color: #fff;
@carousel-control-width: 15%;
@carousel-control-opacity: .5;
@carousel-control-font-size: 20px;
@carousel-indicator-active-bg: #fff;
@carousel-indicator-border-color: #fff;
@carousel-caption-color: #fff;
//== Close
//
//##
@close-font-weight: bold;
@close-color: #000;
@close-text-shadow: 0 1px 0 #fff;
//== Code
//
//##
@code-color: #c7254e;
@code-bg: #f9f2f4;
@kbd-color: #fff;
@kbd-bg: #333;
@pre-bg: #f5f5f5;
@pre-color: @gray-dark;
@pre-border-color: #ccc;
@pre-scrollable-max-height: 340px;
//== Type
//
//##
//** Text muted color
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Detailed_accounts_trace_the_evolution_of_grizzlys_quest_alongside_breathtaking_M | JNP Sri Lanka | National Freedom Front
Detailed accounts trace the evolution of grizzlys quest alongside breathtaking Montana landscapes
grizzlys quest. The vast landscapes of Montana have long been synonymous with untamed wilderness and the majestic grizzly bear. For decades, conservationists, researchers, and enthusiasts have been captivated by , a complex interplay between human interaction, environmental changes, and the enduring spirit of these powerful creatures. This exploration delves into the historical context, ecological challenges, and ongoing efforts to understand and protect grizzly bear populations in the region, examining the delicate balance required for their continued survival. The story is one of adaptation, conflict, and the tireless dedication of those committed to preserving a vital part of America’s natural heritage.
Montana's grizzly bears are not merely a symbol of wilderness; they are a keystone species, playing a crucial role in maintaining the health and biodiversity of their ecosystem. Their foraging habits influence plant communities, and their presence often indicates a thriving, relatively undisturbed habitat. However, their territory increasingly overlaps with human development, leading to inevitable encounters and the need for effective coexistence strategies. Understanding the intricacies of their behavior, habitat preferences, and the impacts of climate change are all essential components of a successful conservation strategy. This investigation will unravel these complexities.
The Historical Range and Decline of Grizzly Bear Populations
Historically, grizzly bears roamed freely across much of western North America, including the Great Plains and the Pacific Northwest. Their range extended from Alaska down to Mexico, and eastward to the Mississippi River. However, with the arrival of European settlers and the subsequent expansion of agriculture, ranching, and resource extraction, their habitat began to shrink dramatically. Bounty programs, stemming from fear and perceived threats to livestock, further decimated their numbers throughout the 19th and early 20th centuries. This systematic eradication brought the grizzly bear to the brink of extinction in many areas. The species faced challenges stemming not just from direct persecution but also from the fragmentation of their habitat, limiting their access to crucial food sources and breeding grounds.
Early Conservation Efforts and Legal Protections
The early 20th century witnessed a growing awareness of the plight of the grizzly bear and the need for conservation measures. Organizations like the National Audubon Society began to advocate for legal protections, and public sentiment gradually shifted towards a more tolerant view of these magnificent animals. A turning point came with the passage of the Endangered Species Act in 1973, which provided legal framework for the protection of threatened and endangered species, including the grizzly bear. This legislation established strict regulations regarding habitat destruction, hunting, and other activities that could harm bear populations. Initial recovery efforts focused on population monitoring, habitat restoration, and public education programs designed to reduce human-bear conflicts. The Act was pivotal in preventing the complete disappearance of the species.
Year
Estimated Grizzly Bear Population in Montana
1975
300-500
1995
600-800
2015
1,063
2023
Approx. 1,100
The table illustrates the slow, but steady, growth of the grizzly bear population in Montana following the implementation of protective measures. While the increase is encouraging, it also highlights the ongoing challenges of ensuring a sustainable future for the species, especially given the increasing pressures from human development and a changing climate.
Habitat Use and Food Sources
Grizzly bears are opportunistic omnivores, with a highly varied diet that depends on seasonal availability and geographic location. Their diet consists of roots, berries, insects, fish, small mammals, and occasionally larger prey like elk or deer. In the spring, they often feed on ungulate carcasses, providing a critical source of protein after a long winter hibernation. Throughout the summer, they focus on foraging for berries, nuts, and other plant matter, accumulating fat reserves to prepare for the next hibernation period. Access to these diverse food sources is essential for their survival and reproductive success. The availability of whitebark pine seeds, for example, plays a vital role in supporting bear populations in high-elevation areas, but this resource is increasingly threatened by climate change and bark beetle infestations.
The Importance of Riparian Areas
Riparian areas – the interfaces between land and a river or stream – are particularly important habitat for grizzly bears. These areas provide a concentrated source of food, including fish, insects, and vegetation. They also offer crucial cover and travel corridors for bears moving between different parts of their range. Maintaining the health and connectivity of riparian ecosystems is therefore essential for grizzly bear conservation. Logging, road construction, and other human activities can have detrimental effects on these sensitive areas, disrupting bear movements and reducing the availability of food sources. Protecting riparian zones is not only beneficial for grizzly bears but also for a wide range of other wildlife species.
Grizzly bears require large, contiguous blocks of suitable habitat.
Access to diverse food sources is critical for their survival.
Riparian areas are particularly important for foraging and travel.
Climate change is impacting the availability of key food sources.
Human development continues to fragment bear habitat.
These points underscore the complex interplay of factors influencing grizzly bear conservation. Addressing these challenges requires a comprehensive and collaborative approach involving government agencies, conservation organizations, and local communities.
Human-Bear Conflict and Mitigation Strategies
As grizzly bear populations have recovered, the frequency of encounters between humans and bears has increased, leading to an increasing risk of conflict. These conflicts often arise when bears are attracted to human-provided food sources, such as garbage, pet food, or improperly stored food. Once a bear becomes habituated to human food, it can become bolder and more likely to enter human settlements, creating a dangerous situation for both humans and bears. Effective mitigation strategies are essential for reducing these conflicts and protecting both people and wildlife. These strategies include promoting bear-resistant garbage containers, educating the public about proper food storage techniques, and implementing responsible recreational practices in bear country.
The Role of Electric Fencing and Bear Spray
Two of the most effective tools for preventing human-bear conflicts are electric fencing and bear spray. Electric fencing can be used to protect livestock, gardens, and other potential attractants, deterring bears from entering areas where they might come into contact with humans. Bear spray, a highly concentrated form of pepper spray, can be used as a defensive tool in the event of a surprise encounter with a bear. It is important to note that bear spray is not a substitute for taking preventative measures, but it can be a valuable tool for deterring a charging bear. Proper training in the use of bear spray is crucial for ensuring its effectiveness and minimizing the risk of accidental exposure.
Store food in bear-resistant containers or hang it from a tree.
Secure garbage in bear-resistant containers.
Make noise while hiking to avoid surprising a bear.
Carry bear spray and know how to use it.
Report any bear conflicts to the appropriate authorities.
Following these steps can significantly reduce your risk of encountering a bear and contributing to a safer environment for both humans and wildlife.
Climate Change and its Impact on Grizzly Bears
Climate change poses a significant and growing threat to grizzly bear populations. Rising temperatures are causing changes in vegetation patterns, snowpack levels, and the timing of seasonal events, all of which can affect bear behavior and food availability. For example, the earlier onset of spring can lead to a mismatch between the timing of bear emergence from hibernation and the availability of key food sources like ungulate carcasses. Changes in snowpack levels can also affect bear distribution and access to habitat. The decline of whitebark pine, a crucial food source for bears in high-elevation areas, is directly linked to climate change and bark beetle infestations. Addressing the impacts of climate change is therefore essential for ensuring the long-term survival of grizzly bears.
Ongoing Research and Future Conservation Efforts
Continued research is vital for understanding the impacts of climate change, human development, and other threats on grizzly bear populations. Researchers are utilizing advanced technologies, such as GPS tracking and genetic analysis, to monitor bear movements, assess habitat use, and evaluate the effectiveness of conservation strategies. This data informs management decisions and helps to prioritize conservation efforts. Future conservation efforts will likely focus on restoring and connecting fragmented habitats, mitigating human-bear conflicts, and addressing the impacts of climate change. Collaboration between government agencies, conservation organizations, and local communities will be critical for achieving these goals.
Expanding Grizzly Bear Coexistence: Lessons from Montana
The experiences in Montana regarding offer valuable insights for other regions with recovering grizzly bear populations or areas where reintroduction efforts are being considered. Success hinges on proactive community engagement, comprehensive education programs, and the consistent application of scientifically-backed mitigation strategies. A recent case study focused on the Blackfoot River Valley demonstrated the positive impact of a coordinated effort involving landowners, resource managers, and local residents to reduce attractants and promote responsible outdoor recreation. This demonstrated a significant decrease in reported bear conflicts and a measurable improvement in resident attitudes towards bear conservation.
Moving forward, focusing on incentivizing coexistence measures, such as providing financial assistance for bear-resistant infrastructure and fostering a sense of shared responsibility for bear conservation, will be paramount. We continually need to refine and adapt our strategies in response to evolving environmental conditions and a deeper understanding of bear behavior. The future of grizzly bears relies not just on protecting their habitat, but on forging a sustainable relationship between humans and these iconic symbols of the American West.