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Review of harvest incentives to control invasive species
Review of harvest incentives to control invasive species

... include a reduction in negative impacts from a reduced average size, although the extent of such benefits will depend on the impacts caused by other members of the population. Challenges associated with harvesting also extend to plants as collection techniques often do not remove entire organisms or ...
Document
Document

... X ...
Fact Sheet No.15: Tunicate
Fact Sheet No.15: Tunicate

... Historical and Current Introduction/Spread: The Tunicate is believed to have originated from Japan. It was first recorded on the Pacific Coast in 1973 and in Puget Sound in 1977. It is also a fouling organism commonly found on the East Coast of the United States. It is common along the West Coast fr ...
Regeneration of Sponges in Ecological Context: Is Regeneration an
Regeneration of Sponges in Ecological Context: Is Regeneration an

... Wilkinson and Thompson (1997). All wounded individuals recovered after Duckworth (2003) made large wounds in two subtidal New Zealand species, but individuals of the species with an ectosomal skeleton that is differentiated into multiple layers recovered much more slowly. Susceptibility to damage by ...
Study Guide for Final
Study Guide for Final

... understand the significance of these to demographers. Be able to use age structure diagrams to predict future size of a population. 10. Understand geometric growth curves. Understand and be able to explain exponential and logistic growth curves and the factors that affect each. Understand and be ab ...
Plant functional traits and the multidimensional nature of species
Plant functional traits and the multidimensional nature of species

... that trait differences between competitors promote diversity, empirical evidence connecting functional traits to the niche differences that stabilize species coexistence is rare. Obtaining such evidence is critical because traits also underlie the average fitness differences driving competitive excl ...
The role of biotic interactions in shaping distributions and realised
The role of biotic interactions in shaping distributions and realised

... Predicting which species will occur together in the future, and where, remains one of the greatest challenges in ecology, and requires a sound understanding of how the abiotic and biotic environments interact with dispersal processes and history across scales. Biotic interactions and their dynamics ...
The role of biotic interactions in shaping distributions and realised
The role of biotic interactions in shaping distributions and realised

... Predicting which species will occur together in the future, and where, remains one of the greatest challenges in ecology, and requires a sound understanding of how the abiotic and biotic environments interact with dispersal processes and history across scales. Biotic interactions and their dynamics ...
Final Bordered brown lacewing report Mike Smith
Final Bordered brown lacewing report Mike Smith

... adopting an omnivorous diet feeding partially on honeydew or pollen (Canard, 2007). Substrate specificity is common within the brown lacewings with many adopting a narrow prey range (Canard, 2007). In the UK there are 30 species of brown lacewing in 7 genera (Plant, 1997). The Bordered brown lacewin ...
Role and consequences of fish diversity in the functioning of African
Role and consequences of fish diversity in the functioning of African

... species has also been questioned. They may provide an insurance of ecosystem stability, which means that the more stable ecosystems in terms of key functions are those richest in species. In fact, in many large Nilo-Sudan river basins, there are apparently several groups of species which are able to ...
Foliicolous lichens as model organisms to study tropical rainforest
Foliicolous lichens as model organisms to study tropical rainforest

... The formation of three distinct foliicolous liehen communities in the rain­ forest understory, in natural Clearings caused by fallen trees, and in the canopy is indicated in several papers on the subject (N O W A K & W IN K LER 1970, 1975; LÜCKING 1995b, 1998c, 1999a, c; CÄCERES et al. 2000). These ...
Ungulate browsers promote herbaceous layer diversity in logged
Ungulate browsers promote herbaceous layer diversity in logged

... Rubus hispidus ...
Modeling Colony-Site Dynamics: A Case Study of Gull
Modeling Colony-Site Dynamics: A Case Study of Gull

... fication as a colony site in order to determine status 1, would be written as: f19(1 - 42x),y3. These equiv(i.e. whether breeding birds were present).Sites were alent models are somewhat analogous to capture-reonly included in the analysis for years in which their capture modeling based on sufficien ...
16: 228-235
16: 228-235

... We first compared the three fitness components for M. luisana individuals growing alone and in association with other species using a Bayesian Generalized Linear Model with different distributions of errors (Poisson for seed production and binomial for seed viability and seed predation). The size of e ...
Regeneration of Sponges in Ecological Context
Regeneration of Sponges in Ecological Context

... Synopsis Sponges, simple and homogeneous relative to other animals, are particularly adept at regeneration. Although regeneration may appear to be obviously beneficial, and many specific advantages to regeneration of lost portions have been demonstrated, comparisons of regeneration among species of ...
Biodiversity and Climate Change: Integrating Evolutionary and
Biodiversity and Climate Change: Integrating Evolutionary and

... Throw up a handful of feathers, and all must fall to the ground according to definite laws; but how simple is this ...
The relative contributions of species richness and species
The relative contributions of species richness and species

... number of species was manipulated by sowing different mixtures in 2007. A treatment to control the main herbivores and their predators was applied with fences (with three levels: no fence, small-meshed fence and large-meshed fence). Each of the 12 experimental fields contained the three levels of he ...
The recent declines of farmland bird populations in Britain: an
The recent declines of farmland bird populations in Britain: an

... shown to benefit (in terms of locally increased breeding density) from options available in one or more agri-environment schemes. Four aspects of agricultural change have been the main drivers of bird population declines, each affecting a wide range of species, namely: (1) weed-control, mainly throu ...
14. MEGAPODES IN NORTHERN AUSTRALIA: A SUMMARY OF RECENT RESEARCH
14. MEGAPODES IN NORTHERN AUSTRALIA: A SUMMARY OF RECENT RESEARCH

... distribution. One particularly useful technique associated with this field has been comparisons of ectoparasites living on the plumage of the birds from different parts of the range. This approach was applied by Proctor and Jones (2004) to the brush-turkeys sampled throughout the entire range of the ...


... Study Organisms: We will focus on the ants of eastern North America. Ants are an abundant (up to 40% of animal biomass), ecologically important (~35% of all herbaceous species have their seeds dispersed by ants, and ants modify ecosystem properties) and diverse taxon whose distribution, diversity an ...
New Mexico Wildlife Action Plan
New Mexico Wildlife Action Plan

... be of greatest conservation need; species that are indicative of the diversity and overall health of the state’s wildlife resources. They include: declining, endemic and vulnerable species (which may, or may not, be federal, state or Tribal protected species); keystone species that contribute to eco ...
Chapter 5
Chapter 5

... When attacked, some species of squid and octopus emit clouds of black ink, allowing them to escape by confusing their predators. Many bad-tasting, bad-smelling, toxic, or stinging prey species have evolved warning coloration, brightly colored advertising that enables experienced predators to recogni ...
The University of Chicago Press The American Society of Naturalists
The University of Chicago Press The American Society of Naturalists

... had not acquired comparable advantages. In this regard, it is important to note that individuals can gain competitive ability not only through increased abilities to acquire or efficiently use limiting resources but also through increased resistance to predation, pathogens, disease, or any other sou ...
Darkling Beetles (Coleoptera: Tenebrionidae) of Canadian Grasslands
Darkling Beetles (Coleoptera: Tenebrionidae) of Canadian Grasslands

... Lagriidae and Alleculidae, now recognized as subfamilies within Tenebrionidae (e.g., Aalbu et al. 2002a, 2002b; Bouchard et al. 2005, 2011). This is the sixth most diverse family of beetles in North America (north of Mexico), with approximately 1,200 species described in 190 genera (Marske and Ivie ...
Species functional redundancy, random extinctions and the stability
Species functional redundancy, random extinctions and the stability

... richness and functional richness can be associated in nature (Vitousek & Hooper 1993; Martinez 1996; Naeem 1998). As case studies accumulate, it is possible that there will be at least one empirical study to corroborate most of the hypothetical patterns, and a posteriori data analysis could then det ...
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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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