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Friday, August 7, 2020 | History

2 edition of Seed dispersal patterns generated by brown bears (Ursus arctos) in southeast Alaska found in the catalog.

Seed dispersal patterns generated by brown bears (Ursus arctos) in southeast Alaska

Laura Ann Patten

Seed dispersal patterns generated by brown bears (Ursus arctos) in southeast Alaska

by Laura Ann Patten

  • 109 Want to read
  • 14 Currently reading

Published .
Written in English

    Subjects:
  • Brown bear -- Alaska.,
  • Seeds -- Dispersal -- Alaska.

  • Edition Notes

    Statementby Laura Ann Patten.
    The Physical Object
    Paginationviii, 40 leaves, bound :
    Number of Pages40
    ID Numbers
    Open LibraryOL14705141M

    Spatial patterns of genetic variation generated by different forms of dispersal during range expan­sion. Heredity, Jorgensen, S.M. and Hamrick, J.L. ().Cited by: Roads interact with ecosystems across a wide range of scales. For example, at small scales, heavy metal molecules accumulate in soils adjacent to roads. At intermediate scales, roads disrupt soil structures and hydrological pathways and alter plant and animal communities. At large scales (regions to nation), roads alter migration patterns and.

    Cakile maritima is an annual species, and is wholly dependent on seed dispersal and recruitment for survival. Therefore populations of C. maritima exist as often ephemeral and shifting populations that depend on short range dispersal of proximal segment fruit and long range dispersal of distal segment fruit by wind onto water and then by sea. In recent years, global climate change has been altering environmental (severe drought, soil salinization, irregular precipitation, etc.), around world, decreasing crop yield and upsetting the balance of ecosystems. Nonetheless, a group of plants known as halophytes have the ability to survive and develop in saline soils (wetlands, deserts or temperate zones), may be used in Author: Milagros Bueno González.

    This classic introductory text offers a balanced survey of ecology. It is best known for its vivid examples from natural history, comprehensive coverage of evolution and quantitative Sixth Edition builds on the book’s hallmark features: its strong evolutionary focus, its breadth and diverse set of examples from key studies, its extensive coverage of behavioral . Spatial pattern of adult trees and the mammal-generated seed rain in the Iberian pear Ecography 33 (3), - Small-scale spatial structure within patterns of seed dispersal Oecologia (3), - Expansion of brown bears (Ursus arctos) into the eastern Alps: a spatially explicit population model.


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Seed dispersal patterns generated by brown bears (Ursus arctos) in southeast Alaska by Laura Ann Patten Download PDF EPUB FB2

Seed dispersal kernels generated by the whole guild of carnivorous mammals in (a) (n = seeds, 84% by red fox and 16% by pine marten) and (b) (n =40% by red fox and 59% by pine marten). Bars represent observed frequency distributions and lines the best‐fitting probability density by: Advantages of seed dispersal: A re-evaluation of directed dispersal Article (PDF Available) in Evolutionary ecology research 3(1) January with 3, Reads How we measure 'reads'Author: Dan Wenny.

We characterized the dispersal modes and spatial patterns of tree species in a tropical semi- evergreen forest of Arunachal Pradesh, northeastern India. To assess if and how brown bears act as a filter of the local flora through endozoochorous seed dispersal for each plant trait studied, we compared the proportion of plants whose seeds had been found in bear faeces (observed value) with the proportion of plants present in the bear habitat (expected value), for each plant trait category, using Cited by: 6.

Calibrations of our data with nDNA divergences between polar bear–panda and polar bear–spectacled bear indicate that polar bears and brown bears separated more than million years ago.

Polar bears are an ancient sister lineage to brown bears and, as a consequence, have lived through several previous warm interglacial phases.

Seed dispersal: Seeds of northern red oak are primarily dispersed by birds and mammals. Scatter-hoarders such as the gray squirrel are particularly important dispersal agents in some areas [ ]. Gray squirrels bury as much as 19 percent of the available acorn crop and fail to recover many seeds over the winter [ 65 ].

- Explore bresimons's board "Teaching: Bears", followed by people on Pinterest. See more ideas about Bear theme, Teaching and Teddy bear day pins. The brown bear Ursus arctos L., population of the Cantabrian Mountains (northwestern Spain) became isolated from other bear populations in Europe about years ago and has declined due to hunting and habitat degradation.

At the beginning of the 20th century, the Cantabrian population split into eastern and western subpopulations, and genetic exchange Cited by: Full text of "FAITH IN A SEED - ENGLISH - THOREAU" See other formats.

Bats are mammals of the order Chiroptera; with their forelimbs adapted as wings, they are the only mammals capable of true and sustained are more manoeuvrable than birds, flying with their very long spread-out digits covered with a thin membrane or smallest bat, and arguably the smallest extant mammal, is Kitti's hog-nosed bat, which is 29–34 mm Clade: Scrotifera.

A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its a result of their plant diet, herbivorous animals typically have mouthparts adapted to rasping or grinding. Horses and other herbivores have wide flat teeth that are adapted to grinding grass, tree bark, and other tough.

Refaunation, the reintroduction or recovery of ecologically important species, has the potential to restore lost seed dispersal services. We are studying the linkages among the loss and refaunation of native and introduced frugivores and seed dispersal in both New Zealand and Hawaii. Location: Pacific Islands, U.S.A.

Citations: Pejchar, L. Understanding the population genetic structure of coastal species (Cakile maritima): seed dispersal and the role of sea currents in determining population structure - Volume 90 Issue 2 - MHEMMED GANDOUR, KAMEL HESSINI, CHEDLY ABDELLYCited by: Distribution and Dispersal Potential of the Endemic Tree Loblolly Bay (Gordonia Lasianthus) in the Southeastern United States Coastal Plain and Implications for Conservation in the Context of Forecast Climate Scenarios.

Herrick Hermann Klaus Brown Follow this and additional works at: : Herrick Hermann Klaus Brown. Large parts of the world are brown or black: Seed dispersal kernel of the largest surviving megaherbivore – the African savanna elephant.

Biotropica, Tapir-generated seed shadows: scale-dependent patchiness in the Amazon rain forest. Journal of Ecology. Please read our short guide how to send a book to Kindle. Save for later.

You may be interested in. Most frequently terms. taiga forest trees species north tree plants forests animals wood soil ground climate pine winter canada spruce food ice - This is my fourth of 5 theme boards for preschool teaching ideas.

The theme of this board is FLOWERS This is part of my assignment for Ms. Gubler's course at SUU. See more ideas about Preschool theme, Plants unit, Spring preschool pins. The Complete Book On Cultivation And Manufacture Of Tea (2nd Revised Edition) by H. Panda, ISBN:Rs.

/ US$. Start studying Other organisms may rely more on passive dispersal, such as a dandelion seed in the wind. These organisms rely on their environment (e.g wind or water currents, the movements of another organism they are hitchhiking on, etc.) to move them.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. Coastal salt- and brackish water lagoons are unique shallow habitats characterized by beds of submerged seagrasses and salt-tolerant Ruppia species. Established long-term and large-scale patterns of connectivity in lagoon systems can be strongly determined by patterns of nearshore and coastal currents next to local bird-mediated seed dispersal.

Despite the Cited by: 6. Soils and soil moisture regimes: White spruce typically grows best on warm, moderately to well drained, upland or floodplain soils [,,].Although white spruce may grow in a range of moisture conditions [2,22,80,], it rarely occurs where permafrost is close to the surface [,], and grows poorly in sites with stagnant water .Unfortunately, this book can't be printed from the OpenBook.

If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF.The enactment of seed act () and rules () followed by Seed Amendment rules (,and ), Seed central orders ().