Decision Making for Food Choice by Grasshoppers
... 1999), one can assume that grass-feeding grasshoppers are oligophagous and therefore relatively specialist species. In Limousin, the heathlands correspond to ecological islands (Brugel et al. 2001). Thus, for species using food resources that are limited and patchy, the distance between these bush f ...
... 1999), one can assume that grass-feeding grasshoppers are oligophagous and therefore relatively specialist species. In Limousin, the heathlands correspond to ecological islands (Brugel et al. 2001). Thus, for species using food resources that are limited and patchy, the distance between these bush f ...
table - cabi-isc
... This form should be completed electronically, but please save the text sections followed by all references (for text and tables) in a separate file. A checklist of the text sections and suggested subheadings is repeated at the end of this form. See Instructions to Authors for further information. Pl ...
... This form should be completed electronically, but please save the text sections followed by all references (for text and tables) in a separate file. A checklist of the text sections and suggested subheadings is repeated at the end of this form. See Instructions to Authors for further information. Pl ...
pdf
... in the effort to protect New York waters from aquatic invasive species (AIS). AIS are non-native aquatic organisms that, when introduced into new waters, are likely to cause economic or environmental harm or harm to human health. AIS are well adapted for spreading throughout an ecosystem, limiting f ...
... in the effort to protect New York waters from aquatic invasive species (AIS). AIS are non-native aquatic organisms that, when introduced into new waters, are likely to cause economic or environmental harm or harm to human health. AIS are well adapted for spreading throughout an ecosystem, limiting f ...
Niche partitioning at multiple scales facilitates coexistence among
... Schneider et al. 2000), or have cited priority effects as drivers of species distributions whereby larger or earlyarriving individuals are able to outcompete late-arriving individuals for a particular niche space (Livdahl 1982, Sunahara and Mogi 2002a, Lounibos et al. 2003). When priority effects oc ...
... Schneider et al. 2000), or have cited priority effects as drivers of species distributions whereby larger or earlyarriving individuals are able to outcompete late-arriving individuals for a particular niche space (Livdahl 1982, Sunahara and Mogi 2002a, Lounibos et al. 2003). When priority effects oc ...
Fig. 3 - ePrints Soton - University of Southampton
... The ecological consequences of species loss are widely studied, but represent an end point of environmental forcing that is not always realised. Changes in species evenness and the rank order of dominant species are more widespread responses to directional forcing. However, despite the repercussions ...
... The ecological consequences of species loss are widely studied, but represent an end point of environmental forcing that is not always realised. Changes in species evenness and the rank order of dominant species are more widespread responses to directional forcing. However, despite the repercussions ...
Lesson Overview
... If you ask someone where an organism lives, that person might answer “on a coral reef” or “in the desert.” These answers give the environment or location, but ecologists need more information to understand fully why an organism lives where it does and how it fits into its surroundings. What else do ...
... If you ask someone where an organism lives, that person might answer “on a coral reef” or “in the desert.” These answers give the environment or location, but ecologists need more information to understand fully why an organism lives where it does and how it fits into its surroundings. What else do ...
Current Extinction Rates Versus Mass Extinction Events Current
... Current Extinction Rates Versus Mass Extinction Events 2 ...
... Current Extinction Rates Versus Mass Extinction Events 2 ...
Intraspecific competition
... importance of ecological interactions, such as competition, and favor coexistence of even ecologically very similar species. By examining both the costs and the benefits, we show that harshness alone does not lessen the importance of species interactions or limit their role in community structure. S ...
... importance of ecological interactions, such as competition, and favor coexistence of even ecologically very similar species. By examining both the costs and the benefits, we show that harshness alone does not lessen the importance of species interactions or limit their role in community structure. S ...
A research project from The National Center for Agricultural Law... the University of Arkansas •
... perspective of law and policy. By contrasting efforts in Great Britain and the United States to deal with biodiversity loss, lessons to be learned from these countries’ quite different approaches will be identified, beginning some premises that do not require extensive elaboration. First, the widesp ...
... perspective of law and policy. By contrasting efforts in Great Britain and the United States to deal with biodiversity loss, lessons to be learned from these countries’ quite different approaches will be identified, beginning some premises that do not require extensive elaboration. First, the widesp ...
assessment
... them both to produce eggs and compete with other animals for forage to support their own growth and metabolism. Reproducing females may have low survivorship, resulting in the present skewed sex ratio. Females usually lay one clutch of about 12-16 eggs per year in late spring or early summer. Althou ...
... them both to produce eggs and compete with other animals for forage to support their own growth and metabolism. Reproducing females may have low survivorship, resulting in the present skewed sex ratio. Females usually lay one clutch of about 12-16 eggs per year in late spring or early summer. Althou ...
A species definition for the Modern Synthesis
... the male and each female form of P. dardanus were different species. Observations of structural similarities of the females, together with the absence of male-like females in most areas led to the suggestion that all of the forms belonged to a single species. The hypothesis was clinched when reports ...
... the male and each female form of P. dardanus were different species. Observations of structural similarities of the females, together with the absence of male-like females in most areas led to the suggestion that all of the forms belonged to a single species. The hypothesis was clinched when reports ...
When endemic coral-reef fish species serve as models: endemic
... One particular photograph taken during the expedition led to this discovery [Fig. 1(a)]. The photograph depicts the underwater landscape of Banc Clark (8∘ 05′ S; 139∘ 36′ W), a remote submerged atoll at the northernmost point of the Marquesas Archipelago that was explored for the first time by the s ...
... One particular photograph taken during the expedition led to this discovery [Fig. 1(a)]. The photograph depicts the underwater landscape of Banc Clark (8∘ 05′ S; 139∘ 36′ W), a remote submerged atoll at the northernmost point of the Marquesas Archipelago that was explored for the first time by the s ...
A meta-analysis of the effects of cushion plants on high
... Abstract: Facilitation by nurse plants is one of the most commonly reported interactions between plants and is regarded as an important factor in structuring plant communities. We used a meta-analysis to examine the generality of these effects, focusing on cushion plants, a common life-form occurrin ...
... Abstract: Facilitation by nurse plants is one of the most commonly reported interactions between plants and is regarded as an important factor in structuring plant communities. We used a meta-analysis to examine the generality of these effects, focusing on cushion plants, a common life-form occurrin ...
Section 3 overview of potential threats
... habitats. The hydrology of different habitat types or systems can vary considerably, depending on the source of water, position in a landscape and local climate and geology. Sources of water include (a) local rainfall and runoff, (b) linear or longitudinal flows (e.g. stream flow from headwaters to ...
... habitats. The hydrology of different habitat types or systems can vary considerably, depending on the source of water, position in a landscape and local climate and geology. Sources of water include (a) local rainfall and runoff, (b) linear or longitudinal flows (e.g. stream flow from headwaters to ...
Generalist predators, food web complexities and - UvA-DARE
... (parasitic wasps that parasitize parasitized prey). Hyperpredation can in fact be classified as apparent competition between the alternative prey and the specialist natural enemy. Predation of specialist natural enemies by hyperpredators will release the pest of the specialist natural enemy from con ...
... (parasitic wasps that parasitize parasitized prey). Hyperpredation can in fact be classified as apparent competition between the alternative prey and the specialist natural enemy. Predation of specialist natural enemies by hyperpredators will release the pest of the specialist natural enemy from con ...
Invasive Fish in the Murray- Darling Basin
... Native Fish Strategy • 50 year plan approved in 2003 • Aim is to restore populations to 60% of preEuropean settlement levels • Addresses 10 key threats to native spp • These include habitat loss, lack of fish ...
... Native Fish Strategy • 50 year plan approved in 2003 • Aim is to restore populations to 60% of preEuropean settlement levels • Addresses 10 key threats to native spp • These include habitat loss, lack of fish ...
Chapter 11 power point
... What Is Being Done to Preserve Biodiversity? In the U.S., the primary action related to the preservation of biodiversity involved the passage of the Endangered Species Act (1973). This legislation designates species as endangered or threatened and gives the U.S. government jurisdiction over tho ...
... What Is Being Done to Preserve Biodiversity? In the U.S., the primary action related to the preservation of biodiversity involved the passage of the Endangered Species Act (1973). This legislation designates species as endangered or threatened and gives the U.S. government jurisdiction over tho ...
Infochemicals structure marine, terrestrial and freshwater food webs
... knowledge at the individual level, especially in terrestrial plant–insect communities. The larger part of animal biodiversity on the planet consists of insect communities living on terrestrial plants. Laboratory bio-tests have shown how insects are attracted to infochemicals related to prey, potenti ...
... knowledge at the individual level, especially in terrestrial plant–insect communities. The larger part of animal biodiversity on the planet consists of insect communities living on terrestrial plants. Laboratory bio-tests have shown how insects are attracted to infochemicals related to prey, potenti ...
Effects of the non-native amphibian species Discoglossus pictus on
... assessed the determinants of invasiveness (Van Kleunen et al. 2010) to elucidate why some species succeed and others fail in establishing themselves and spreading over a range into which they have been introduced, but quantifying the consequences of invasion on native communities is much more diffic ...
... assessed the determinants of invasiveness (Van Kleunen et al. 2010) to elucidate why some species succeed and others fail in establishing themselves and spreading over a range into which they have been introduced, but quantifying the consequences of invasion on native communities is much more diffic ...
The origin of troglobites
... high fecundity and an active lifestyle. Other species are less exacting in their food-energy requirements. The range of energy requirements exhibited by animals with otherwise similar niche characteristics within a single community is limited at its upper end by the rate at which foodenergy becomes ...
... high fecundity and an active lifestyle. Other species are less exacting in their food-energy requirements. The range of energy requirements exhibited by animals with otherwise similar niche characteristics within a single community is limited at its upper end by the rate at which foodenergy becomes ...
(WME) newsletter
... private collections in the region which has in the past led to the wide-scale poaching and mortality of the oryx from ‘protected’ areas. Why is this necessary when we have up to 7,000 in captivity? Most captive collections have overpopulation problems and often have to set up bachelor herds of surpl ...
... private collections in the region which has in the past led to the wide-scale poaching and mortality of the oryx from ‘protected’ areas. Why is this necessary when we have up to 7,000 in captivity? Most captive collections have overpopulation problems and often have to set up bachelor herds of surpl ...
Competition strength of two significant invasive
... Lake JC, Leishman MR (2004) Invasion success of exotic plants in natural ecosystems: the role of disturbance, plant attributes and freedom from herbivores. Biol Conserv 117:215–226 Li Y, Norland M (2001) The role of soil fertility in invasion of Brazilian Pepper (Schinus terebinthifolius) in ...
... Lake JC, Leishman MR (2004) Invasion success of exotic plants in natural ecosystems: the role of disturbance, plant attributes and freedom from herbivores. Biol Conserv 117:215–226 Li Y, Norland M (2001) The role of soil fertility in invasion of Brazilian Pepper (Schinus terebinthifolius) in ...
Quantifying the evidence for biodiversity effects on ecosystem
... Ecology Evolution and Systematics 36, 267-294; Raffaelli, D. (2006) Biodiversity and ecosystem functioning: issues of scale and trophic complexity. Marine Ecology Progress Series 311, 285-294 ...
... Ecology Evolution and Systematics 36, 267-294; Raffaelli, D. (2006) Biodiversity and ecosystem functioning: issues of scale and trophic complexity. Marine Ecology Progress Series 311, 285-294 ...
spider competition in structurally simple
... the response by the other species in numbers, web height, and fecundity. Spiller found evidence of both exploitative and interference competition in this pair of spiders. Removing the much more common Cyclosa resulted in an increase in the body size and fecundity of Metepeira. The mechanism to expla ...
... the response by the other species in numbers, web height, and fecundity. Spiller found evidence of both exploitative and interference competition in this pair of spiders. Removing the much more common Cyclosa resulted in an increase in the body size and fecundity of Metepeira. The mechanism to expla ...
Basins of attraction for species extinction and coexistence in spatial
... where R, S, and P denote individuals from the three species, respectively. Relation 共1兲 describes the cyclic selection, i.e., prey, which occurs at the rate u. Relations 共2兲 and 共3兲 define two types of motions of individuals on the lattice at the rate s, and relation 共4兲 characterizes the reproducti ...
... where R, S, and P denote individuals from the three species, respectively. Relation 共1兲 describes the cyclic selection, i.e., prey, which occurs at the rate u. Relations 共2兲 and 共3兲 define two types of motions of individuals on the lattice at the rate s, and relation 共4兲 characterizes the reproducti ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.