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6-3 Biodiversity
6-3 Biodiversity

... End Show Copyright Pearson Prentice Hall ...
David Brown - Montana State University
David Brown - Montana State University

... Study of the basic and applied aspects of higher fungi, particularly in extreme environments such as the alpine life zone and high-elevation smelter-impacted sites ...
The interplay of pollinator diversity, pollination services
The interplay of pollinator diversity, pollination services

... dispersal and cross-pollination rates, are largely unknown. Since studies on insect-mediated pollen flow are difficult to conduct at a landscape-scale, modelling approaches can provide some insight (Shaw et al. 2006; Hoyle, Hayter & Cresswell 2007). Considering the implementation of transgenic crops ...
Latitudinally structured variation in the temperature dependence of damselfly growth rates
Latitudinally structured variation in the temperature dependence of damselfly growth rates

... Secondly, for those species where E was estimated based on different temperature ranges, we quantified the strength and direction of this bias and corrected for it directly. We fitted species-specific ANCOVAs with E as the response variable, latitude as a continuous fixed effect and temperature rang ...
Niche and fitness differences relate the maintenance of
Niche and fitness differences relate the maintenance of

... hypothesis testing, while their absolute magnitudes should be interpreted more cautiously because ...
Vegetation and Biodiversity - Queensland Murray
Vegetation and Biodiversity - Queensland Murray

... QMDC also supported the engagement of a private consultant to develop a Granite Flora Recovery Plan for 10 endangered, vulnerable The rare Golden-tallied gecko (Strophurus taenicauda). © C Eddie and rare flora species found on the Stanthorpe plateau. The plan includes general species than 30# remnan ...
Molecular Ecology, 10, 2569–2576
Molecular Ecology, 10, 2569–2576

... we may have expected, given their great dispersal potential. As anticipated, freshwater fish are far more differentiated than marine fish, highlighting the role of physical barriers in the development of genetic lineages. Invertebrates are too heterogeneous to fit into a single category, but their p ...
Life at Its Many Levels
Life at Its Many Levels

... The evolutionary view of life came into focus in 1859 when Charles Darwin published The Origin of Species ...
Parasites and Ecosystem Engineering: What Roles Could They Play?
Parasites and Ecosystem Engineering: What Roles Could They Play?

... directlymodifythe habitatof all the speciesinhabitingfree-living organisms.This new researcharea at the interfacebetween of ecology and parasitologyshouldimproveour understanding of phenotypicalterationsinducedby the ecologicalconsequences parasitesin ecosystems. ...
Niche construction, co-evolution and biodiversity
Niche construction, co-evolution and biodiversity

... Other recent studies of ecosystem engineers' importance for biodiversity and ecosystem functioning have a more observational character; they compare habitats with and without engineers. For example, patches of cushion plant Azorella monantha enable other species to survive in the harsh environment o ...
sky islands
sky islands

... species showing no evidence for postglacial divergence among sky islands and other species showing evidence for divergence much older than the last glaciation. This discord between paleoecological and genetic data can be attributed in part to the difficulty of detecting and timing recent genetic dive ...
On the evolutionary ecology of species` ranges - People
On the evolutionary ecology of species` ranges - People

... directional environmental change such as climate warming. For instance, an introduced species with poor dispersal capabilities may remain stalled in its invasion until appropriate genetic variants appear that permit long-distance dispersal, at which time it may expand rapidly. Moreover, depending up ...
Revista Nordestina de Zoologia Revisado 1 edicao
Revista Nordestina de Zoologia Revisado 1 edicao

... The fauna that inhabits artificial reef environments such as shipwrecks is part of a biological community that cannot be neglected. This study aimed to uncover the benthic animal biodiversity of the Servemar X and Vapor de Baixo shipwrecks, located on the coast of Pernambuco State, Brazil, to reveal ...
Time and Emergence in Victorian Scientific Theories
Time and Emergence in Victorian Scientific Theories

... geological period, but according to their crystal structure they had started their formation much earlier: Suppose two months to be the usual time required for passing from some tropical country to our island… and that an annual importation takes place of a certain tropical species of insect, the or ...
Ecosystem vulnerability to alien and invasive species: a case study
Ecosystem vulnerability to alien and invasive species: a case study

... hypothesis’ describes highly diverse communities as being more subject to invasions because of the facilitative effect of both native richness and previously introduced species (Cohen and Carlton, 1998; Stohlgren et al., 2003). The hypothesis emphasizes positive rather than antagonistic interactions ...
Habitat destruction and metacommunity size in pen
Habitat destruction and metacommunity size in pen

... individuals to select appropriate habitats before they settle. Key-words: abundance and distribution patterns, disturbance, diversity, fragmentation, marine habitats, rare species Journal of Animal Ecology (2007) doi: 10.1111/j.1365-2656.2007.0@@@@.x ...
What does ecological modelling model? A proposed classification of
What does ecological modelling model? A proposed classification of

... habitats (sinks) due to immigration from healthier nearby populations (sources). Although individuals in the sinks may die because of adverse conditions, they are replaced by new immigrants. Here, the realized niche is larger than the fundamental one, as the species occupies habitats that are inadeq ...
ecosystem - Cloudfront.net
ecosystem - Cloudfront.net

... • An interaction in which one organism captures and feeds on another organism is called predation • The organism that does the killing and eating is called the predator, and the food organism is the prey • Cheetahs are active predators with claws and sharp teeth: – Their powerful legs enable them to ...
ecosystem stability
ecosystem stability

... 1. The vast majority of natural ecosystems experience regular environmental change, or disturbances. 2. Most ecologists describe ecosystem stability as the ability of an ecosystem to maintain its structure and function over long periods of time and despite disturbances. 3. Ecosystem structure includ ...
Lecture 4 The Distribution of Life
Lecture 4 The Distribution of Life

... The Distribution of Life The Physical Environment D. Environmental Gradients and Species Niches ...
Population structure and species dynamics of Spisula
Population structure and species dynamics of Spisula

... coarser sands started from about 7 m deep until 25.7 m deep, where very coarse sands appeared (Fig. 2A, D, G). In the winter (February 2002), coarser sands started from about 5 m deep until 20 m, where fine sands appeared and afterwards a bare rock line was detected at 25.6 m depth; from this depth ...
PDF - Marine Ornithology
PDF - Marine Ornithology

... visionary researchers had the foresight to start various marine bird population time series several decades ago. Today, these data sets provide a priceless historical perspective necessary to interpret present conditions and to forecast the future. These observations, which become more valuable ever ...
The Altitudinal Niche-Breadth Hypothesis in Insect
The Altitudinal Niche-Breadth Hypothesis in Insect

... due to dispersal limitations, insect species arising from radiation events are constrained to feed on the host plants available to them locally, forming the realized trophic niche, even if the potential trophic niche is much wider. For example, if a radiation event occurs in a region of low plant ph ...
Ecological succession - Northwest ISD Moodle
Ecological succession - Northwest ISD Moodle

... The processes of succession can have complex effects on species diversity. As succession takes place, processes such as soil formation may gradually increase species diversity. At some points in succession, the process of competition may decrease species diversity. In general, mature communities hav ...
as a PDF
as a PDF

... the distributions of a and K and the abundance distribution of all species. Figure 1a compares results from the analytic target distributions with results from numerical integrations for the base parameters used by Wilson et al. (2003) with and without variation in intraspecific interaction strength ...
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Biogeography



Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals.Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, geology, and physical geography.Modern biogeographic research combines information and ideas from many fields, from the physiological and ecological constraints on organismal dispersal to geological and climatological phenomena operating at global spatial scales and evolutionary time frames.The short-term interactions within a habitat and species of organisms describe the ecological application of biogeography. Historical biogeography describes the long-term, evolutionary periods of time for broader classifications of organisms. Early scientists, beginning with Carl Linnaeus, contributed theories to the contributions of the development of biogeography as a science. Beginning in the mid-18th century, Europeans explored the world and discovered the biodiversity of life. Linnaeus initiated the ways to classify organisms through his exploration of undiscovered territories.The scientific theory of biogeography grows out of the work of Alexander von Humboldt (1769–1859), Hewett Cottrell Watson (1804–1881), Alphonse de Candolle (1806–1893), Alfred Russel Wallace (1823–1913), Philip Lutley Sclater (1829–1913) and other biologists and explorers.
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