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0041332
0041332

... used as part of the decision making process, along with a range of other available information and evidence. Depending on the nature of the consultation exercise the responses received may: ...
Trophic ecology of two sympatric lizard species: the
Trophic ecology of two sympatric lizard species: the

... and Capula 2011; Mou 1987; Pérez-Mellado and Corti 1993). Consequently, terrestrial invertebrates, especially insects, occupy a predominant part of their diet (Arnold 1987; Carretero 2004). However, the feeding ecology of the family shows an impressive variability and numerous factors appear to affe ...
TERRESTRIAL SPECIES Grand Cayman Blue iguana Cyclura
TERRESTRIAL SPECIES Grand Cayman Blue iguana Cyclura

... While it is likely that the original population included many animals living in coastal shrubland environments, the Blue iguana now only occurs inland, in natural dry shrubland, and along the margins of dry forest. Adults are primarily terrestrial, occupying rock holes and low tree cavities. Younger ...
SPECIES ASSESSMENT FOR GREAT BASIN SPADEFOOT TOAD
SPECIES ASSESSMENT FOR GREAT BASIN SPADEFOOT TOAD

... limitations. Since most data presented comes from specific studies with restricted research areas, interpolation and extrapolation of this data must be done with caution. It seems that aspects S. intermontana biology, ecology, and conservation vary over the geographic extent of its range. Therefore, ...
Inverse density dependence and the Allee effect
Inverse density dependence and the Allee effect

... It has recently been proposed that the high rates of group extinction observed in obligate cooperative breeders are generated by a need for a critical number of helpers, which produce an Allee effect13. As a result, a social group driven below a critical threshold would have a lower chance of recove ...
Leaf trait variation captures climate differences but differs with
Leaf trait variation captures climate differences but differs with

... Therefore, for the same set of plant species in two contrasting habitats, we would hypothesize that plant trait variability observed across species should be congruent with differences in environments, yet variability observed within a species should differ with species because of different genetic ...
Bioeconomics and biodiversity in harvested metacommunities: a
Bioeconomics and biodiversity in harvested metacommunities: a

... these patches is described by its state, as defined by the identities of the species present. Patches can change state either because they are colonized by individuals of a new species dispersing from other patches or by losing species via local extinction. The dynamics of community assembly are det ...
amphibian and reptile survey report and management plan for
amphibian and reptile survey report and management plan for

... that flows north from Williams Lake, exiting the Base at East 6th Avenue. This drainage was dry during the entire 2010 survey period and appears to receive very sporadic overflow from the outflow channel of Williams Lake and seepage from behind the dam at Williams Lake. These flows appear much less ...
Empirical Evidence for the Scale Dependence of Biotic Interactions
Empirical Evidence for the Scale Dependence of Biotic Interactions

... regularly and reference peer-reviewed journal articles. For each woodpecker, we recorded all reported interactions with any other bird species as identified by the articles containing mention of the woodpecker species. We did not include interactions that occur at bird feeders because these can repr ...
Zoology 100/101 Lecture Study Guide
Zoology 100/101 Lecture Study Guide

... 1. Describe the major steps in the scientific method (process) 2. Describe, in detail, the components and characteristics of an experiment. 3. You wish to determine whether a fertilizer actually improves the yield of corn in your vegetable garden, so you decide to do an experiment. 50 plants get fer ...
successional mechanism varies along a gradient in hydrothermal
successional mechanism varies along a gradient in hydrothermal

... intervals (as in Ambrose 1984), we reasoned that faunal changes at vents are driven by one or more of the following processes: 1) Inhibition. The initial invertebrate colonists interact with later arrivals in a way that deters subsequent colonization. Under these conditions, we expect that colonists ...
Comparative Country Study
Comparative Country Study

... A species is a group of organisms that can successfully mate with each other and reproduce. Examples include the giant octopus, Atlantic salmon, Pacific tree frog, Polar Bear, or stellar jay. Remember that a species is very specific; selecting “horse” or “bear” is too broad. Do not make a hasty deci ...
Soft-bottom intertidal ecosystems shaped by ecosystem engineers
Soft-bottom intertidal ecosystems shaped by ecosystem engineers

... Research over the last decades has revealed that ecosystem engineering – the modification of the abiotic environment by organisms (Jones et al. 1994; 1997) – can be an important structuring interaction in many ecosystems (e.g. Bruno et al. 2003; Wright and Jones 2006; Hastings et al. 2007; Jones et ...
Rusty Crayfish
Rusty Crayfish

... Could impact native fish populations through competition, predation and habitat modification May reduce amount and diversity of native aquatic invertebrates through predation May impact recreational and commercial fisheries through feeding on fish eggs and competing with juvenile fish for food Are a ...
Functional and phylogenetic diversity of woody plants drive
Functional and phylogenetic diversity of woody plants drive

... number of tree and shrub individuals at the study sites. As we used abundance-weighted indices to quantify functional community composition and diversity, these data should not be affected by the 5% of woody plant individuals for which trait values were missing. Data on leaf toughness, which has bee ...
An Analysis of Persistence, Resilience, and the Conservation of
An Analysis of Persistence, Resilience, and the Conservation of

... case, species numbers have dwindled to such an extent that preventive policy measures such as regulations on the nature of fishing equipment and moratoriums on grazing are put in place to ensure that literal death does not occur. This is the case of figurative death. In the second case, some species ...
Macroecology of Microbes – Biogeography of the
Macroecology of Microbes – Biogeography of the

... et al. 1995). Furthermore, greenhouse pot cultures do not always reveal the complete fungal community present in the field (Stutz and Morton 1996; Fitter 2005). In a survey in southern Utah, 47 spore morphospecies were found by examining field spores, but only 12 of these species were revealed in gr ...
page proofs oofs
page proofs oofs

... to both questions turned out to be ‘Yes’ — and to our surprise, the cell densities were actually quite high. We observed two size classes of cells under the microscope at the field camp. One class contained typically sized bacteria — around 0.5 microns. Bacteria in the other class were more abundant ...
4.0 Billion Years of Earth Environmental Change
4.0 Billion Years of Earth Environmental Change

... History and Dr. Preston Marx of the Aaron Diamond AIDS Research Center. It supposes that as human populations expanded into new areas during the Pleistocene, for example, into North America approximately 14,000 years ago, they brought with them one or more disease-causing agents. These diseases, new ...
Environmental responses, not species interactions, determine
Environmental responses, not species interactions, determine

... interactions (Isbell et al. 2009, Hector et al. 2010, de Mazancourt et al. 2013, Gross et al. 2014). Species richness affects the degree of synchrony in a community because larger species pools are more likely to contain species that respond dissimilarly to environmental conditions, reducing synchro ...
Land use vs. fragment size and isolation as determinants
Land use vs. fragment size and isolation as determinants

... of the local assemblages. It was intended only to be a rapid, but comparable survey, not a complete one. In each site, four 280-m long transects were established, from the center to the edge of the fragments, each transect oriented to a different cardinal direction, generally north, south, east and ...
Reprint (1.8MB PDF) - Litchman-Klausmeier Lab
Reprint (1.8MB PDF) - Litchman-Klausmeier Lab

... A central question in community ecology is the means by which species coexist. Models of coexistence often assume that species have fixed trait values and consider questions such as how tradeoffs and environmental variation influence coexistence and diversity. However, species traits can be dynamic, v ...
Diversity, evolutionary specialization and geographic distribution of
Diversity, evolutionary specialization and geographic distribution of

... species ( + one subspecies) occur only on Borneo (M. aetheadenia Airy Shaw, M. beccariana Merr., M. calcicola Airy Shaw, M. depressa Muell. Arg. and M. depressa ssp., M. havilandii Airy Shaw, M. indistincta Whitmore, M. kingii var. plapphylla Airy Shaw, M. lamellata, M. pearsonii, M. petanaspla Airy ...
Adaptive Speciation: Theory and Evolutionary Experiments
Adaptive Speciation: Theory and Evolutionary Experiments

... contact; has been deemed unlikely because of theoretical difficulties ...
Effects of body size and resource availability on
Effects of body size and resource availability on

... experiment I determined that while both species’ per capita effect on resource levels is virtually identical, Batillaria achieves a marked advantage over Cerithidea through its superior resource conversion efficiency (Byers, in press). For a given level of resource Batillaria adds on average 20–30% ...
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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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