Resource partitioning between ungulate populations in arid
... The arid North African Sahelo-Saharan region contains a distinct species assemblage (Burgess et al. 2006) subject to high levels of present and future threats (Thomas 2008), yet has attracted very little scientific attention (Durant et al. 2014) compared to African savannahs (Darmon et al. 2012). Th ...
... The arid North African Sahelo-Saharan region contains a distinct species assemblage (Burgess et al. 2006) subject to high levels of present and future threats (Thomas 2008), yet has attracted very little scientific attention (Durant et al. 2014) compared to African savannahs (Darmon et al. 2012). Th ...
Maternal provisioning of eggs of the starlet sea anemone
... capsules into oneliter mesocosms with either an amphipod ( Gammarus mucronatus ) or grass shrimp ( Palaemonetes pugio ). Predator free controls monitored natural veliger and capsule mortality. After three days, the remaining veligers or capsules were counted to determine consumption. Our fie ...
... capsules into oneliter mesocosms with either an amphipod ( Gammarus mucronatus ) or grass shrimp ( Palaemonetes pugio ). Predator free controls monitored natural veliger and capsule mortality. After three days, the remaining veligers or capsules were counted to determine consumption. Our fie ...
ecosystems - Friends of Ventura River
... or new ecosystems are formed, biodiversity increases. Biodiversity decreases when genetic variation decreases, a species becomes extinct, or when an ecosystem complex is lost (Gallo et al. 2005). Energy flows, nutrient and hydrological cycles, natural disturbance regimes, and feedback mechanisms all ...
... or new ecosystems are formed, biodiversity increases. Biodiversity decreases when genetic variation decreases, a species becomes extinct, or when an ecosystem complex is lost (Gallo et al. 2005). Energy flows, nutrient and hydrological cycles, natural disturbance regimes, and feedback mechanisms all ...
2011-12 Annual Report - The Manitoba Habitat Heritage Corporation
... Management Plan (NAWMP), was created through an international partnership between Canada and the United States but now includes Mexico as well. NAWMP was a response to significant declines in waterfowl populations in the 1980s. The primary goal of this plan was to restore all waterfowl species’ popu ...
... Management Plan (NAWMP), was created through an international partnership between Canada and the United States but now includes Mexico as well. NAWMP was a response to significant declines in waterfowl populations in the 1980s. The primary goal of this plan was to restore all waterfowl species’ popu ...
Literature Review Ahlam Salih Eltahir and Bouran Ibrahim
... The aim of this study was to determine if stomata density can be used as a criteria in cultivar differentiation. The stomata taken into account were those from stipules and abaxial and adaxial surface of leaflets. Stomata were considered for this cultivar differentiation because they are the organel ...
... The aim of this study was to determine if stomata density can be used as a criteria in cultivar differentiation. The stomata taken into account were those from stipules and abaxial and adaxial surface of leaflets. Stomata were considered for this cultivar differentiation because they are the organel ...
in Jaú National Park, Amazonas, Brazil
... Melanosuchus niger. However, those species can also inhabit streams. Streams were the most dissimilar habitats studied and also had two other species: Paleosuchus trigonatus and P. palpebrosus. The structure of these assemblage does not suggest a pattern of species associated and separated by habita ...
... Melanosuchus niger. However, those species can also inhabit streams. Streams were the most dissimilar habitats studied and also had two other species: Paleosuchus trigonatus and P. palpebrosus. The structure of these assemblage does not suggest a pattern of species associated and separated by habita ...
mascarene islands, biology
... and an undescribed Pterodroma known only from subfossil bones), most endemic species were landbirds. A large fraction of these endemic birds, especially the larger ones, have now gone extinct, among which were found the legendary dodo (Raphus cucullatus, Columbidae, formerly Rhaphidae), its flightles ...
... and an undescribed Pterodroma known only from subfossil bones), most endemic species were landbirds. A large fraction of these endemic birds, especially the larger ones, have now gone extinct, among which were found the legendary dodo (Raphus cucullatus, Columbidae, formerly Rhaphidae), its flightles ...
Fungal fidelity in the myco‐heterotroph‐to‐autotroph life cycle of
... to, or disposal of, the elements from the plant, (2) a droughtresistance strategy, (3) a means of avoiding competition from plants less tolerant to the elements, (4) inadvertent uptake of elements and (5) defense against herbivores or pathogens. All of these hypotheses have been tested to varying de ...
... to, or disposal of, the elements from the plant, (2) a droughtresistance strategy, (3) a means of avoiding competition from plants less tolerant to the elements, (4) inadvertent uptake of elements and (5) defense against herbivores or pathogens. All of these hypotheses have been tested to varying de ...
Changes in woody plant composition of three vegetation types
... intensity, which in turn determines the species that survive after a fire. Fire intensity also increases in presence of a high fuel load (Leuthold, 1996; McShane, 1987; Sabiti and Wein, 1988; Salvatori et al., 2001), which would be the case after the elimination of the elephants (Smart et al., 1985) ...
... intensity, which in turn determines the species that survive after a fire. Fire intensity also increases in presence of a high fuel load (Leuthold, 1996; McShane, 1987; Sabiti and Wein, 1988; Salvatori et al., 2001), which would be the case after the elimination of the elephants (Smart et al., 1985) ...
Soft-bottom intertidal ecosystems shaped by ecosystem engineers
... also be closely related when a single species act as a predator and an engineer simultaneously (e.g. Wilby et al. 2001; Sanders and van Veen 2011). Besides interacting with predation, ecosystem engineering has been shown to affect competition as well (e.g. Palmer 2003; Ransom 2011; chapter 2). Howev ...
... also be closely related when a single species act as a predator and an engineer simultaneously (e.g. Wilby et al. 2001; Sanders and van Veen 2011). Besides interacting with predation, ecosystem engineering has been shown to affect competition as well (e.g. Palmer 2003; Ransom 2011; chapter 2). Howev ...
Are hybrid species more fit than ancestral parent species in the
... for number of seeds per seed head, seed biomass and seed head biomass. In the PET habitat, it was not possible to collect seed heads this frequently because of the distance from the other habitats. Leaf traits were assessed 28 June–3 July for each live plant with more than four leaves and at least o ...
... for number of seeds per seed head, seed biomass and seed head biomass. In the PET habitat, it was not possible to collect seed heads this frequently because of the distance from the other habitats. Leaf traits were assessed 28 June–3 July for each live plant with more than four leaves and at least o ...
Peter J. Mumby, , 98 (2006); DOI: 10.1126/science.1121129
... Exuma Cays Land and Sea Park (ECLSP), which lies near the center of the Bahamas archipelago. The ECLSP is large (456 km2) and was established in 1959. A ban on fishing has been enforced there since 1986, and the current biomass of E. striatus is seven times greater in the ECLSP than that observed in ...
... Exuma Cays Land and Sea Park (ECLSP), which lies near the center of the Bahamas archipelago. The ECLSP is large (456 km2) and was established in 1959. A ban on fishing has been enforced there since 1986, and the current biomass of E. striatus is seven times greater in the ECLSP than that observed in ...
12 Terrestrial fauna - The Department of State Development
... A targeted survey for the frog species Mixophyes iteratus and Litoria olongburensis was conducted between 29 January 2008 and 2 February 2008 in response to the confirmation of the presence of M. iteratus and habitat for L. olongburensis in September 2007. The targeted survey was designed to identi ...
... A targeted survey for the frog species Mixophyes iteratus and Litoria olongburensis was conducted between 29 January 2008 and 2 February 2008 in response to the confirmation of the presence of M. iteratus and habitat for L. olongburensis in September 2007. The targeted survey was designed to identi ...
fishery benefits of fully protected marine reserves: why habitat and
... sufficient realism to effectively gauge reserve effects on migratory species. They usually assume that individuals are homogeneously distributed in a uniform sea and move randomly. They also assume that fishers hunt at random. Neither is true. For centuries, fishers have targeted places and times when the ...
... sufficient realism to effectively gauge reserve effects on migratory species. They usually assume that individuals are homogeneously distributed in a uniform sea and move randomly. They also assume that fishers hunt at random. Neither is true. For centuries, fishers have targeted places and times when the ...
Temporal variability in the Abra alba community determined by
... community characteristics. These temporal variations were investigated in the Abra alba community on the Belgian Continental Shelf over a period of nine years (1995 – 2003). During this period, the community did not show a cyclic pattern, but a shift between the years 1995 – 1997 and 1999 – 2003 tha ...
... community characteristics. These temporal variations were investigated in the Abra alba community on the Belgian Continental Shelf over a period of nine years (1995 – 2003). During this period, the community did not show a cyclic pattern, but a shift between the years 1995 – 1997 and 1999 – 2003 tha ...
Responses of insect pests, pathogens, and invasive plant species to
... ests. Climate also affects pathogens and insect pests through its influence on their host species (i.e., through changes in a host’s distribution, population dynamics, nutrition, and defense compounds) and through effects on other predators, pathogens, and mutualists. Further, all types of nuisance ...
... ests. Climate also affects pathogens and insect pests through its influence on their host species (i.e., through changes in a host’s distribution, population dynamics, nutrition, and defense compounds) and through effects on other predators, pathogens, and mutualists. Further, all types of nuisance ...
Spectacled Bear Conservation
... The second aspect of the project centered around the installation of four camera traps in strategic locations. These 35mm cameras are motion activated and can be programed to shoot 1-6 frames per disturbance. These cameras were incorporated to provide tangible evidence as to what is (or is not) bein ...
... The second aspect of the project centered around the installation of four camera traps in strategic locations. These 35mm cameras are motion activated and can be programed to shoot 1-6 frames per disturbance. These cameras were incorporated to provide tangible evidence as to what is (or is not) bein ...
unit 11 ecosystem stability
... In a large community the different constituent populations occupy different ecological niches - that is they play different roles. Some species, however, may have importan1 control over other species. Such species are called as dominant species. In a thick eucalyptus forest, for example, if you remo ...
... In a large community the different constituent populations occupy different ecological niches - that is they play different roles. Some species, however, may have importan1 control over other species. Such species are called as dominant species. In a thick eucalyptus forest, for example, if you remo ...
Consumer versus resource control of producer producer community structure
... (Fig. 3). By moving the community toward greater evenness, herbivores increase coexistence where productivity and dominance are high. Fertilization drives the community toward lower evenness, thereby reducing richness in communities already dominated by few species (Fig. 3). Our results indicate tha ...
... (Fig. 3). By moving the community toward greater evenness, herbivores increase coexistence where productivity and dominance are high. Fertilization drives the community toward lower evenness, thereby reducing richness in communities already dominated by few species (Fig. 3). Our results indicate tha ...
Nutrition
... Factors affecting it Outline of biotic and abiotic factors in ONE local ecosystem and their effects On the distribution and abundance of Organisms in that ecosystem Use of sampling method ...
... Factors affecting it Outline of biotic and abiotic factors in ONE local ecosystem and their effects On the distribution and abundance of Organisms in that ecosystem Use of sampling method ...
eports
... differences in species performance, we compared survival of individuals between treatments. We were able to assess survival directly in trial 1 using a generalized linear model with a logit link and binomial errors. We could not easily use survival as a dependent variable in trial 2 because there wa ...
... differences in species performance, we compared survival of individuals between treatments. We were able to assess survival directly in trial 1 using a generalized linear model with a logit link and binomial errors. We could not easily use survival as a dependent variable in trial 2 because there wa ...
Destruction of grasslands
... underlie many deserts and shrublands. Known as fossil aquifers, they have recently been exploited through deep wells and are rapidly becoming depleted in portions of the Sahara, Namibia, Saudi Arabia and the United States. The aquifer beneath the Great Sand Desert of Iran has been pumped out, leavin ...
... underlie many deserts and shrublands. Known as fossil aquifers, they have recently been exploited through deep wells and are rapidly becoming depleted in portions of the Sahara, Namibia, Saudi Arabia and the United States. The aquifer beneath the Great Sand Desert of Iran has been pumped out, leavin ...
Research_publications_files/Silvertown et al. 2006
... 3 Instantaneous comparisons of species richness between plots do not accurately reflect temporal rates of loss which may be multiplicative rather than additive. This suggests that comparisons among sites, nutrient inputs, especially N treatments, or soil acidity may in general underestimate the thre ...
... 3 Instantaneous comparisons of species richness between plots do not accurately reflect temporal rates of loss which may be multiplicative rather than additive. This suggests that comparisons among sites, nutrient inputs, especially N treatments, or soil acidity may in general underestimate the thre ...
Forests, Human Health and Well-Being in Light of Climate
... Abstract: The importance of forests for human health and well-being is well documented in the literature. Forests provide a wide range of ecosystem services beneficial for human life both in urbanised and rural areas, from temperature regulation and air filtration to provision of food and medicinal ...
... Abstract: The importance of forests for human health and well-being is well documented in the literature. Forests provide a wide range of ecosystem services beneficial for human life both in urbanised and rural areas, from temperature regulation and air filtration to provision of food and medicinal ...
Interactions 1 in Ecosystems - Kossmann
... C o m p e t i t i o n occurs when two organisms fight for the same limited resources. There are two different types of competition: interspecific competition and intraspecific competition. Even though they may have different niches, two species may still use similar resources. Interspecific competit ...
... C o m p e t i t i o n occurs when two organisms fight for the same limited resources. There are two different types of competition: interspecific competition and intraspecific competition. Even though they may have different niches, two species may still use similar resources. Interspecific competit ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.