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Habitat Selection and Population Regulation in
Habitat Selection and Population Regulation in

... Rodriguez 1995). Note that the model above may require a noninteger number of individuals in the two habitats to equalize fitness across habitats. We nevertheless will talk about the distribution of individuals when in fact proportions of individuals are distributed. The idea behind isodar analysis ...
Identifying OSPAR Threatened and/or Declining Species and
Identifying OSPAR Threatened and/or Declining Species and

... An OSPAR MPA as defined by the OSPAR Commission (2003a) is “an area within the [OSPAR] maritime area for which protective, conservation, restorative or precautionary measures, consistent with international law have been instituted for the purpose of protecting and conserving species, habitats, ecosy ...
desert bighorn sheep of new mexico
desert bighorn sheep of new mexico

... The goal of the PHVA is to assist the recovery of New Mexico’s desert bighorn sheep. Agency representatives, researchers, sportsmen, landowners and other interested parties are invited to collaboratively analyze the available information (much of which will be gathered before the workshop) and devel ...
PLANT-POLLINATOR NETWORKS: INCORPORATING INDIVIDUAL VARIATION AND FUNCTIONAL INFORMATION
PLANT-POLLINATOR NETWORKS: INCORPORATING INDIVIDUAL VARIATION AND FUNCTIONAL INFORMATION

... B Supplementary Material Chapter 2 B.1 Comparison of module identification by different measures B.2 Measure of the degree of individual specialization . . . . . B.3 Biological features of nodes and topological roles . . . . . B.4 Supplementary Figures Chapter 2 . . . . . . . . . . . . . . B.5 Suppl ...
Habitat Cascades: The Conceptual Context and
Habitat Cascades: The Conceptual Context and

... Some researchers have used experimental manipulations of species-pairs to emphasize causal mechanisms and feedbacks between interactors, thereby documenting mutualism and commensalism (e.g., Bertness 1984; Stachowicz and Hay 1999; Stachowicz and Whitlatch 2005). Other researchers have investigated h ...
California Red-Legged Frog (Rana aurora draytonii)
California Red-Legged Frog (Rana aurora draytonii)

... Upland habitats could be affected to a small degree by almost all covered activities. The largest impacts would be from road construction, bridge replacement/construction, fence and gate repair and installation, vegetation management, recreation on lands owned by the SFPUC, high-traffic grazing area ...
Resource Use by the Eastern Grey Kangaroo and the Black
Resource Use by the Eastern Grey Kangaroo and the Black

... Paul Slinger and Dr. David Ramsay who provided invaluable advice and guidance. Professor Peter Temple-Smith from the Conservation Department of the Zoological Board of Victoria is thanked for allowing free access to the Coranderrk Reserve. Professor Robert Wallis and Dr. Graeme Coulson have been out ...
Linking marine fisheries species to biogenic habitats in New Zealand
Linking marine fisheries species to biogenic habitats in New Zealand

... densities (up to a threshold for snapper and trevally); artificial horse mussel with epifauna mimics also elevate juvenile snapper numbers. Some of the above work is semi-quantitative in nature, which makes it difficult to generate metrics such as densities, to feed into modelling frameworks. Other ...
Inertia: the discrepancy between individual and common good in
Inertia: the discrepancy between individual and common good in

... performance. Individuals can be selected to have traits that diminish a common good and make population persistence difficult. At the extreme, the discrepancy between levels of selection is predicted to make traits evolve towards values at which a population can no longer persist (evolutionary suici ...
nzcons - Northern Rivers Guardians
nzcons - Northern Rivers Guardians

... EBPC Nationally Threatened Fauna at risk from the rally ................................................. 9 Spotted-tailed Quoll (Dasyurus maculates) .................................................................... 9 Rally Stages .................................................................. ...
How trophic interaction strength depends on traits
How trophic interaction strength depends on traits

... of directly measurable, phenotypic, hereditary traits that characterize the physiology, anatomy, and behavior of the individuals of a species? Below, we refer to these later traits as phenotypic traits. Which objective criterion should be used to choose trophic traits (among phenotypic traits, or th ...
Monitoring and Management in the San Diego Multiple Species
Monitoring and Management in the San Diego Multiple Species

... to identify areas of consensus, discuss areas of disagreement, and to prioritize next steps that will ultimately lead to improved monitoring and management of Multiple Species Conservation Program (MSCP) lands. This report is intended to be a working document that will inform and improve monitoring ...
Conservation of Landbirds in the African
Conservation of Landbirds in the African

... keeping with the spirit of the Convention on Biological Diversity (1992) and Agenda 21, should be conserved for the benefit of present and future generations. Many populations of migratory landbird species that migrate over long distances between and within Africa and Eurasia are particularly vulner ...
Invasive non-native plants retain native mammal communities in
Invasive non-native plants retain native mammal communities in

... (Trichosurus vulpecula; rare), short-beaked echidna (Tachyglossus aculeatus) and southern brown bandicoot (Isoodon obesulus; endangered). The abundance, density, dispersal and recruitment of bandicoots were also greatest in blackberry, with arthropod abundance and blackberry density the strongest po ...
what do we mean by biodiversity?
what do we mean by biodiversity?

... Ludus Vitalis, vol. XV, num. 28, 2007, pp. 45-68. ...
Zootaxa,Order Trichoptera Kirby, 1813 (Insecta), Caddisflies
Zootaxa,Order Trichoptera Kirby, 1813 (Insecta), Caddisflies

... Plicipennes Latreille, and variations of Phryganea, such as Phryganides Latreille and Phryganina Newman (see Fischer 1960 for other early names). Since Linnaeus’s original description, the order has grown to include about 13,000 extant species described from all faunal regions, making it the 7th lar ...
Dispersal: a central trait in life history
Dispersal: a central trait in life history

... consistently present the opposite of the “canonical” trade-off pattern. While wing development should not per se be related to dispersal, any absence of wings must impair the dispersal process. In species lacking such obvious polymorphism, evidence for consistent dispersal syndromes is less clear. W ...
Report to SAZ - Durham University Community
Report to SAZ - Durham University Community

... The winter transect count involves monitoring game species by counting tracks of animals that intersect with a stable network of transects, surveyed during periods of snow cover. It is the main method of estimating the number of many game animals in the Russian Federation. For over four decades, thi ...
Feeding responses of the red fox (Vulpes vulpes) to different wild
Feeding responses of the red fox (Vulpes vulpes) to different wild

... Originally, Holling (1959) showed type I to increase linearly with prey density up to a threshold, above which the rate is constant. However, most authors refer to type I as linear without the asymptote (Turchin 2003; Fig. 1a). Type II responses describe prey consumption increasing at a monotonicall ...
Dispersal: a central trait in life history
Dispersal: a central trait in life history

... consistently present the opposite of the “canonical” trade-off pattern. While wing development should not per se be related to dispersal, any absence of wings must impair the dispersal process. In species lacking such obvious polymorphism, evidence for consistent dispersal syndromes is less clear. W ...
Exploring indirect effects of biological invasions on native ecosystems
Exploring indirect effects of biological invasions on native ecosystems

... removal of native seed species in invaded areas. The first part of the study measured giving-up densities in foraging trays that varied in presence of an artificial cover in forest patches of high and low L. maackii density. I found significant changes in behavior and preference for artificial cover ...
Landscape effects on insect pests of Dracaena marginata
Landscape effects on insect pests of Dracaena marginata

... insect pest populations. We found that forest may provide ecosystem services for D. marginata fields, reducing leafhopper populations through bottom up and top down effects. Leafhopper eggs and nymph populations were lower in plots near forest patches, while katydid egg presence was not affected by ...
The Role of Body Size in Complex Food Webs: A Cold - ePIC
The Role of Body Size in Complex Food Webs: A Cold - ePIC

... et al., 1998), large-bodied or slow-growing species, with late maturity tend to decline or go extinct more rapidly than those that are smaller (Cardillo, 2003; Layer et al., 2011; McKinney, 1997). This suggests that some life-history traits like body size are linked to susceptibility to extinction a ...
Causes and Consequences of Plant Spatial Patterns in Natural and
Causes and Consequences of Plant Spatial Patterns in Natural and

... Aggregated plant patterns have also been linked to patchy distributions of soil resources, especially in shrub-dominated communities (Schenk et al. 2003; Tirado & Pugnaire 2003; Perry et al. 2008; Perry et al. 2009). Disturbance via grazing is also recognized as playing a significant role in spatial ...
Spatial ecology of the Ethiopian wolf, Canis simensis
Spatial ecology of the Ethiopian wolf, Canis simensis

... that long-term food security and the inheritance of a high quality territory may be the main selective pressures behind sociality in the Ethiopian wolf. The ecological conditions for sociality and expansionism, however, were constrained by the local pattern of resource availability within population ...
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Occupancy–abundance relationship

In ecology, the occupancy–abundance (O–A) relationship is the relationship between the abundance of species and the size of their ranges within a region. This relationship is perhaps one of the most well-documented relationships in macroecology, and applies both intra- and interspecifically (within and among species). In most cases, the O–A relationship is a positive relationship. Although an O–A relationship would be expected, given that a species colonizing a region must pass through the origin (zero abundance, zero occupancy) and could reach some theoretical maximum abundance and distribution (that is, occupancy and abundance can be expected to co-vary), the relationship described here is somewhat more substantial, in that observed changes in range are associated with greater-than-proportional changes in abundance. Although this relationship appears to be pervasive (e.g. Gaston 1996 and references therein), and has important implications for the conservation of endangered species, the mechanism(s) underlying it remain poorly understood
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