Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 5.
  1. Library Resource
    Articles et Livres
    décembre, 2015
    États-Unis d'Amérique

    Seeds of Success (SOS) is a national native seed collection program, led by the US Department of Interior Bureau of Land Management in partnership with numerous federal agencies and nonfederal organizations. The mission of the SOS is to collect wildland native seed for long-term germplasm conservation and for use in seed research, development of native plant materials, and ecosystem restoration. Each year about 50 SOS teams are stationed across the United States to make seed collections following a single technical protocol.

  2. Library Resource
    Articles et Livres
    décembre, 2015
    États-Unis d'Amérique

    Botanical capacity plays a fundamental role in solving the grand challenges of the next century, including climate change, sustainability, food security, preservation of ecosystem services, conservation of threatened species, and control of invasive species. Yet critical components of botanical education, research, and management are lacking across government, academic, and private sectors.

  3. Library Resource
    Articles et Livres
    décembre, 2013
    États-Unis d'Amérique

    The Florida Scrub ecosystem depends on fire to sustain ecosystem function and to support resident plant and animal species. A recent study addressed the relationship between the time since last fire (TSF) and resident amphibians and reptiles in rosemary bald, one Florida Scrub habitat type. This is a parallel study in another Florida Scrub habitat type, scrubby flatwoods, at Archbold Biological Station (ABS), Lake Placid, Florida, USA. We installed 36 400-m² enclosures (four burn units within each of three TSF categories X 3 replicates per burn unit) at ABS.

  4. Library Resource
    Articles et Livres
    décembre, 2014
    États-Unis d'Amérique, Global

    The relationship between landscape pattern and the distribution and spread of exotic species is an important determinant of where and when management actions are best applied. We have developed an interdisciplinary approach for prioritizing treatment of harmful, nonnative, invasive plants in National Park landscapes of the Mid-Atlantic USA.

  5. Library Resource
    Articles et Livres
    décembre, 2013
    Amérique septentrionale

    The National Park Service (NPS) and other land management agencies have interest in managing bison herds under “natural” conditions; yet demographic features of natural populations are not well described. One solution to this issue involves the analysis of historical bison (Bison spp.) jump data. We conducted a literature search of archeological data associated with bison jump sites in North America with the goal of analyzing the data and summarizing historical bison demographics. We identified six locations with adequate information to conduct vertical life-table analyses.

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