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Where The Wild Extinctions Are
Where The Wild Extinctions Are

... useful trait -- they are extremely visible. Nearly all of them fly up where we can see them; they make distinct and identifiable noises; many are brightly colored; none are too small to see; many roost in trees so they can be seen from afar with binoculars; in all, they are perhaps the most visible ...
Modelling coevolution in multispecies communities
Modelling coevolution in multispecies communities

... may become extinct immediately; (iii) the new species may survive, and cause one or more other species to become extinct. A new species will often be in direct competition with the parent species, therefore a special case of outcome (iii) is that the new species simply replaces its parent in the eco ...
spatial habitat heterogeneity influences competition
spatial habitat heterogeneity influences competition

... Abstract. Spatial mosaics in resource productivity may facilitate competitive coexistence when species differ in their ability to exploit resource-rich vs. resource-poor conditions. In this study, I investigated the influence of a termite-generated spatial mosaic in resource productivity on the dyna ...
arXiv:adap-org/9801003v1 16 Jan 1998
arXiv:adap-org/9801003v1 16 Jan 1998

... may become extinct immediately; (iii) the new species may survive, and cause one or more other species to become extinct. A new species will often be in direct competition with the parent species, therefore a special case of outcome (iii) is that the new species simply replaces its parent in the eco ...
Reprint
Reprint

... Convention on Biological Diversity (CBD 1992). Through this convention the need for prioritization and management of priority species has been highlighted in the Strategic Plan for Biodiversity 2011-2020 (COP 10 2010), although no guidance on how to achieve this ideal is provided. There has been rec ...
A Cultural Niche Construction Theory of Initial
A Cultural Niche Construction Theory of Initial

... depend upon the distribution, spacing, and seasonal availability of different resources around their settlements (e.g., Bettinger et al. 1997; Bird and Bliege Bird 1997; Kelly 2007). Catchment zones around settlements in resourcerich environments are smaller in general than those where resources are ...
Evolutionary relatedness does not predict competition and co
Evolutionary relatedness does not predict competition and co

... species to coexist [1–4]. Darwin [5] proposed that competition should be strongest between close relatives because they share with each other more traits that influence species interactions, such as habitat use, the types of resources consumed and potential shared predators. As such, he argued that ...
DRAFT BA Y-DELTA OVERSIGHT
DRAFT BA Y-DELTA OVERSIGHT

... Water Resources comments that introduced species and other factors result in a constantly changing Estuary and one where few management measures can be successfully used to control these species. He states that the scientific community does not have a good understanding of the interactions between n ...
752-4740-1-SP - Oecologia Australis
752-4740-1-SP - Oecologia Australis

... foragers and their use of resources (Christianini et al. 2012). Moreover, even those few studies have arrived to different conclusions. For example, Ryti & Case (1988), in experiments with ants that carry seeds in the desert, showed that removal of the neighboring colonies did not influence the type ...
FACTORS AFFECTING IMPLEMENTATION OF RECOVERY PLANS
FACTORS AFFECTING IMPLEMENTATION OF RECOVERY PLANS

... tasks was calculated by dividing the number of tasks that were underway or completed by the total number of tasks for which implementation status was known. Although considering partially and fully completed tasks as ‘‘implemented’’ biased our results toward higher rates, we included both levels so ...
Biogeographic Crossroads as Priority Areas for Biodiversity
Biogeographic Crossroads as Priority Areas for Biodiversity

... One of the crucial questions faced in the prioritization process is assessment of the degree to which a proposed area will benefit multiple taxa, not just the focal or indicator taxon (or taxa) used to assign conservation priority. Prendergast (1997 ) and others ( Pearson & Cassola 1992; Oliver et a ...
Wildlife Module - Forests Ontario
Wildlife Module - Forests Ontario

... 6. Identify a variety of major stakeholders and agencies, including Federal, Provincial and Municipal government bodies, that provide oversight of wildlife resources in Ontario ...
Text - People Server at UNCW
Text - People Server at UNCW

... Together with the data collected during 1999-2002, this project has amassed an unprecedented data set on the abundance and habitat utilization patterns of algae and several invertebrate taxa, including stony corals, gorgonians, other benthic cnidarians, sponges, mollusks, echinoderms, and crustacean ...
Ex-situ conservation
Ex-situ conservation

... the establishment of field gene banks and livestock parks. Lively debate surrounds ex-situ techniques, with much deliberation over when ex-situ measures are appropriate and justified 4. In particular captive breeding and reintroduction programmes have sparked controversy due to, among others, the di ...
Oscillations in age-structured models of consumer
Oscillations in age-structured models of consumer

... species acts as both a consumer and a resource of the other, which is the basis of many mutualisms. In uni-directional consumer-resource interactions one species acts as a consumer and the other as a material and/or energy resource while neither acts as both. In this paper we consider an age-structu ...
A Consumer-Resource Approach to Community Structure1 The
A Consumer-Resource Approach to Community Structure1 The

... For an equilibrium community with two cant third trophic level. In order to explain trophic levels and a single limiting resource the coexistence of other plant species with in a physically uniform habitat, theory pre- the dominant, or the observed zonation in dicts that the one species with the low ...
Interpreting the `selection effect` of biodiversity on ecosystem function
Interpreting the `selection effect` of biodiversity on ecosystem function

... at the expense of others. Trait-dependent complementarity occurs when growth in mixture rather than monoculture increases the functioning of species with particular traits, but not at the expense of other species. Trait-independent complementarity occurs when growth in mixture rather than monocultur ...
1 - Shepway District Council
1 - Shepway District Council

... In respect of these species, PPS9 states that they ‘have been identified as requiring conservation action as species of principal importance for the conservation of biodiversity in England. Local authorities should take measures to protect the habitats of these species from further decline through p ...
Divergence of above- and belowground C and N
Divergence of above- and belowground C and N

... latter 3 weeks along OT. Along each transect this was during the peak biomass period and well before the onset of senescence (which is in September at NECT; end of September/early October at OT). In total 46 sites were chosen along NECT and 41 sites along OT (Fig. 2), each two adjacent sites at inte ...
network topology and biodiversity loss in food webs: robustness
network topology and biodiversity loss in food webs: robustness

... and methodologies (Table 1). The webs studied, in order of increasing connectance, are (1) Grassland: co-occurring grass species and their associated endophytic insects in Great Britain, (2) Scotch Broom: primarily insects associated with the Scotch broom shrub Cytisus scoparius in Silwood Park, Eng ...
Reef fish community structure in the Tropical Eastern Pacific
Reef fish community structure in the Tropical Eastern Pacific

... and Chial 1983; Glynn and Maté 1997). Due to its inaccessibility, detailed biological studies are still lacking. The fish community structure of this region is particularly interesting from the perspective of population biology and biogeography due to its geological history and environmental stabil ...
Chapter 3: Maryland`s Wildlife Resources and Species of Greatest
Chapter 3: Maryland`s Wildlife Resources and Species of Greatest

... opportunity to identify species of wildlife in greatest need of conservation, as well as the key habitats that support them. Rather than focusing on a certain group or category of wildlife, this effort evaluated the status of over 2,000 known animal species and considered the countless thousands mor ...
The Cronus hypothesis – extinction as a necessary and dynamic
The Cronus hypothesis – extinction as a necessary and dynamic

... Earth mother) posits that life on Earth functions like a single, self-regulating organism, whereas Medea (siblicidal wife of Jason of the Argonauts) describes instead a self-destructive feedback where life ‘seeks’ to destroy itself. We argue that these contrasting views are actually extremes of a sc ...
Predicting rates of interspecific interaction from phylogenetic trees
Predicting rates of interspecific interaction from phylogenetic trees

... With functions describing how the traits of individuals influence their probability of interaction in hand, we can proceed to predict the rate of interaction between any two species i and j given some statistical distribution of trait values for the two species. Before moving forward, however, we ma ...
Distribution and spread of the invasive slug Arion vulgaris
Distribution and spread of the invasive slug Arion vulgaris

... A. vulgaris may potentially be present along the entire coast of Norway up to Vesterålen in Nordland County at some point in the future. The distribution recorded by Dolmen & Winge (1997) mainly covered central Norway and south-east Norway, with only scattered recordings in western Norway. It is dif ...
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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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