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Invasion Dynamics of a Non-indigenous bivalve, Nuttallia obscurata
Invasion Dynamics of a Non-indigenous bivalve, Nuttallia obscurata

Response Diversity Can Increase Ecological Resilience to
Response Diversity Can Increase Ecological Resilience to

... This question for tropical corals is particularly interesting in a management context, where anticipated increases in bleaching disturbance caused by climate change has motivated research to inform management aimed at protecting the resistance and resilience of coral reefs (e.g., West and Salm 2003; ...
Coupled Oscillations in Food Webs: Balancing Competition and
Coupled Oscillations in Food Webs: Balancing Competition and

... which rare values of the various populations are expressed. The system’s general typology with CR coupling and no RR coupling is one of interspecific competition between the two consumers. Thus, we would expect that as CR coupling increases, eventually the point of Gausian exclusion will be reached. ...
MacNeil, Calum, Jaimie T. A. Dick, Mark P. Johnson, Melanie J
MacNeil, Calum, Jaimie T. A. Dick, Mark P. Johnson, Melanie J

... Despite the many ecological problems and economic costs associated with biological invasions, the interactions among factors determining invasion success often remain poorly understood (Holway et al. 1998). Certainly, invasion success is influenced by the ability of invading individuals to withstand ...
Four types of interference competition and their impacts on
Four types of interference competition and their impacts on

... directly affect population demographic quantities. The four different types of interference competition are indistinguishable in unstructured population models, such as those used in several recent studies on food-web evolution (e.g., Loeuille and Loreau, 2005; Rossberg et al., 2008; Brännström et a ...
Negative effects of an autogenic ecosystem engineer: interactions
Negative effects of an autogenic ecosystem engineer: interactions

... conducted at San Antonio Bay (Argentina: 40° 45’ S, 65° 55’ W) from September 2003 to March 2004. This is an 80 km2 embayment affected by up to 9 m semidiurnal tides. The intertidal zone is characterized by sandy pebble flats at lower tidal elevations (i.e. 0 to 4 m above the mean low tide level [he ...
R_M_annual_report_20.. - Lewa Wildlife Conservancy
R_M_annual_report_20.. - Lewa Wildlife Conservancy

... Lewa received 620 mm of rainfall in 2007 compared to 758 mm in 2006. This contrasted with 286 mm that was received in 2005. This amount of rainfall was also way above the long term mean rainfall of 517 mm averaged since 1972. Management issues A number of issues that have a direct impact on the curr ...
Answer Key - Mandarin High School - Mrs. Brand`s Science Classes
Answer Key - Mandarin High School - Mrs. Brand`s Science Classes

... Some tags or bands used to mark an individual can come off due to a variety of circumstances, from moisture to temperature to the animal’s own behavior. It often takes years of trial and error before scientists develop a tag that will actually stay on an organism until someone takes it off. Scientis ...
BIOTIC INTERACTIONS WITHIN SANDY BEACH ECOSYSTEMS
BIOTIC INTERACTIONS WITHIN SANDY BEACH ECOSYSTEMS

... Marine Biology Research Group Campus Sterre – S8 Krijgslaan 281 B-9000 Gent Belgium ...
Evolutionary Conservation Biology
Evolutionary Conservation Biology

... biologists have to analyze dynamics at large spatial and temporal scales. Ecological and evolutionary processes are then closely intertwined. In particular, evolutionary responses to anthropogenic environmental change can be so fast and pronounced that conservation biology can no longer afford to ig ...
Legume presence increases photosynthesis and N concentrations
Legume presence increases photosynthesis and N concentrations

... Agropyron repens (L.) Beauv. and Koeleria cristata Pers. (C3 grasses). Species hereafter are referred to by their genus. Since the nine-species plots were each composed of a unique set of randomly chosen plant species, we systematically chose those plots that had any of the three non-fixing focal sp ...
Interactions between organisms and the abiotic environment
Interactions between organisms and the abiotic environment

... Germinating rainforest tree seedlings in Cassowary dung Tully to Mission Beach Road, Queensland C Morritt ...
The fine line between mutualism and parasitism: complex effects in
The fine line between mutualism and parasitism: complex effects in

... Branchiobdellids are ectosymbionts associated with crayfish throughout the holarctic region (Fig. 1; Gelder 1999). Previous experiments that manipulated branchiobdellid abundance revealed positive effects of the worms on crayfish growth and reduced crayfish mortality with increasing worm densities ( ...
The fine line between mutualism and parasitism: complex effects in
The fine line between mutualism and parasitism: complex effects in

... Branchiobdellids are ectosymbionts associated with crayfish throughout the holarctic region (Fig. 1; Gelder 1999). Previous experiments that manipulated branchiobdellid abundance revealed positive effects of the worms on crayfish growth and reduced crayfish mortality with increasing worm densities ( ...
VI) Population and Community Stability
VI) Population and Community Stability

... B) Apply a force – does it change?  see graphic definition of resistance C) Apply a disturbance (i.e. change the community) Determine if community returns to pre-perturbation or control state.  see graphic definition of resilience ...
Allee effects in biological invasions
Allee effects in biological invasions

Winners always win: growth of a wide range of plant species from
Winners always win: growth of a wide range of plant species from

... strategies and physiological mechanisms, plants could show contrasting responses to shifts in CO2 concentration. For example, woody plant species invest a lot of their biomass in nonphotosynthetic stem tissue (Poorter et al. 2012b), so in early stages of development at low CO2, they might be outcomp ...
(Diptera: Culicidae) Within the United States?
(Diptera: Culicidae) Within the United States?

... what ramifications there are for these differences without comparative data on populations elsewhere. The arrival of Ae. albopictus in the United States coincided with declines in the abundance of a well-established container species, Aedes aegypti (L.) (Yee 2016). This pattern is exactly opposite o ...
Marine Ecology Progress Series 282:87
Marine Ecology Progress Series 282:87

... (5 studies, 12 cases), as well as field sediment (3 studies, 10 cases) and water (2 studies, 2 cases) enrichments on aboveground growth rate for all instances in which a treatment and control were compared 90 d following the manipulation. If these results were consistent with the overall analyses, t ...
ABSTRACT  Title: INDUCIBLE PLANT RESPONSES LINKING ABOVE- AND
ABSTRACT Title: INDUCIBLE PLANT RESPONSES LINKING ABOVE- AND

... chewer). Theory predicts that within guild competition will be stronger than competition between guilds. Mean effect sizes are presented with 95% bootstrap confidence intervals, and numbers below error bars are the number of observations per group. * = significant difference (P < 0.01) between group ...
Ecological Effects of Allelopathic Plants – a Review
Ecological Effects of Allelopathic Plants – a Review

... These rings are characterised by a decrease in the number of plants, and inflorescences as well as smaller size of individual plants in the middle of the ring (Rice 1984). Distinct zones with sparse or without vegetation has been observed around some shrubs in chaparrals (Rice 1984, Williamson 1990) ...
The Ecological Role of a
The Ecological Role of a

... controlled by physical factors such as desiccation, higher temperature and strong solar radiation, while the lower limits are more often set by biotic factors, such as competition and predation (Connell, 1961; 1972). Therefore the harsher physical conditions higher on the shore tend to decrease the ...
PhD-thesis - bibsys brage
PhD-thesis - bibsys brage

... growth was complex. Culling interacted with the intrinsic characteristics of the species and other causes of mortality making any predictions of the effect of culling rather challenging. However, I found that temporal pair bond stability was a better predictor of growth rate than individual culling ...
Conservation of Wildlife Populations
Conservation of Wildlife Populations

... and current extinction rates, the dynamics of human population growth, an overview of study design and ethics, essential background on genetics necessary for understanding the interface between genetic and demographic approaches, and the estimation of within-population vital rates. The second sectio ...
The evolution of growth trajectories: what limits growth
The evolution of growth trajectories: what limits growth

... observed, particularly because variation in maturation traits is often less than expected (e.g. Bjorndal et al., 2003). Considering flexible growth produces a more realistic model of life-history optimization. In such models, constraints on growth are usually modeled as instantaneous survival costs, ...
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Storage effect

The storage effect is a coexistence mechanism proposed in the ecological theory of species coexistence, which tries to explain how such a wide variety of similar species are able to coexist within the same ecological community or guild. The storage effect was originally proposed in the 1980s to explain coexistence in diverse communities of coral reef fish, however it has since been generalized to cover a variety of ecological communities. The theory proposes one way for multiple species to coexist: in a changing environment, no species can be the best under all conditions. Instead, each species must have a unique response to varying environmental conditions, and a way of buffering against the effects of bad years. The storage effect gets its name because each population ""stores"" the gains in good years or microhabitats (patches) to help it survive population losses in bad years or patches. One strength of this theory is that, unlike most coexistence mechanisms, the storage effect can be measured and quantified, with units of per-capita growth rate (offspring per adult per generation).The storage effect can be caused by both temporal and spatial variation. The temporal storage effect (often referred to as simply ""the storage effect"") occurs when species benefit from changes in year-to-year environmental patterns, while the spatial storage effect occurs when species benefit from variation in microhabitats across a landscape.
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