radiocesium in plants of forest ecosystems
... Incidentally, it should be underlined that in the literature it is not always clear whether differences in soil radioactivity are due to differential deposition, or to the effects of different concentration factors. Radioactivity patterns in soils might be observed on different geographic scales: a) ...
... Incidentally, it should be underlined that in the literature it is not always clear whether differences in soil radioactivity are due to differential deposition, or to the effects of different concentration factors. Radioactivity patterns in soils might be observed on different geographic scales: a) ...
Download, PDF, 2.2 mb - Water`s Journey: Everglades
... Spartina sp., known commonly as cordgrass, is wide-ranging. A true halophyte (salt lover), it concentrates salts in its roots so that the concentration exceeds that of seawater. This causes water to diffuse into the roots instead of out. Salt glands on the leaves and stem excrete excess salt. ...
... Spartina sp., known commonly as cordgrass, is wide-ranging. A true halophyte (salt lover), it concentrates salts in its roots so that the concentration exceeds that of seawater. This causes water to diffuse into the roots instead of out. Salt glands on the leaves and stem excrete excess salt. ...
Full Text - Digital Access to Scholarship at Harvard
... There are many factors that influence species richness [2]. For example, island biogeography theory suggests that, all else equal, communities that encompass a large area are also more likely to receive immigrants that introduce new species restore species lost to stochastic extinction; this is espe ...
... There are many factors that influence species richness [2]. For example, island biogeography theory suggests that, all else equal, communities that encompass a large area are also more likely to receive immigrants that introduce new species restore species lost to stochastic extinction; this is espe ...
Chap. 7: Effect of habitat and predator exclusion on larval parasitism
... and Pienkowski 1978, Morrison and Strong 1981, Ang and Kok 1995). Exclusion experiments make it possible to assess the quantitative impact of different mortality factors. Quantitative studies using predator exclusion techniques have been conducted only in temperate climates until Memmott et al. (199 ...
... and Pienkowski 1978, Morrison and Strong 1981, Ang and Kok 1995). Exclusion experiments make it possible to assess the quantitative impact of different mortality factors. Quantitative studies using predator exclusion techniques have been conducted only in temperate climates until Memmott et al. (199 ...
pdf - New Zealand Ecological Society
... recovered from the 51 gravel beaches sampled (Appendix 1) throughout New Zealand. The abundance of surface-down invertebrates varied considerably between gravel beaches, ranging from less than one to as many as 70 m–2 with a mean of 10 m–2 (±2 SE) (Fig. 1). Acari and Collembola were by far the most ...
... recovered from the 51 gravel beaches sampled (Appendix 1) throughout New Zealand. The abundance of surface-down invertebrates varied considerably between gravel beaches, ranging from less than one to as many as 70 m–2 with a mean of 10 m–2 (±2 SE) (Fig. 1). Acari and Collembola were by far the most ...
(Frostweed, Asteraceae) not found in grasslands?
... high light, non-shaded open areas. When open grasslands, savannas or gaps were examined, V. virginica was not present. Similar situations have been reported for other species. For example, Strepthanthus bracteatus, a rare mustard found only in central Texas, occurred below a Quercus verginiana/Junip ...
... high light, non-shaded open areas. When open grasslands, savannas or gaps were examined, V. virginica was not present. Similar situations have been reported for other species. For example, Strepthanthus bracteatus, a rare mustard found only in central Texas, occurred below a Quercus verginiana/Junip ...
Marine reserves demonstrate top
... the top-down impact of predators and demonstrating indirectly the ecosystem-level effects of fishing. They function as an experimental tool where large-scale ecosystem manipulations are carried out by preventing fishing and subsequently elevating predator densities. The treatments can be viewed as e ...
... the top-down impact of predators and demonstrating indirectly the ecosystem-level effects of fishing. They function as an experimental tool where large-scale ecosystem manipulations are carried out by preventing fishing and subsequently elevating predator densities. The treatments can be viewed as e ...
The Effect of Deer and Method of Removal of Invasive Lonicera
... effects. The response of the native herb community to the presence of standing dead stems ...
... effects. The response of the native herb community to the presence of standing dead stems ...
Factors Affecting Stream Fish Community Composition and Habitat
... high degree of variability because of geographic distribution of species, human modifications of streams and the surrounding landscape, presence or absence of nonnative species, and natural effects. Natural variability in fish communities can be attributed to differences in elevation, water temperat ...
... high degree of variability because of geographic distribution of species, human modifications of streams and the surrounding landscape, presence or absence of nonnative species, and natural effects. Natural variability in fish communities can be attributed to differences in elevation, water temperat ...
Appendix E - Biodiversity Offsets Strategy
... Groote Eylandt, and the other islands in the archipelago, have significant ecological value because the terrestrial fauna species present on the island are relatively protected from key threatening processes (such as Cane Toads) that exist on the mainland. There is also very little development on Gr ...
... Groote Eylandt, and the other islands in the archipelago, have significant ecological value because the terrestrial fauna species present on the island are relatively protected from key threatening processes (such as Cane Toads) that exist on the mainland. There is also very little development on Gr ...
Initial soil development under pioneer plant species in metal mine
... diverse species of organisms. Aggregation is one of the best indicators for fertile soils because it bridges the physics and biochemistry of soil systems (Young & Crawford 2004). Soil scientists especially pedologists have been using the presence of structure to differentiate soils from nonsoil mate ...
... diverse species of organisms. Aggregation is one of the best indicators for fertile soils because it bridges the physics and biochemistry of soil systems (Young & Crawford 2004). Soil scientists especially pedologists have been using the presence of structure to differentiate soils from nonsoil mate ...
Reddish Egret Plan - Gulf Coast Joint Venture
... Additionally, alternate nesting sites are important for colonial waterbirds during years in which traditional or preferred sites are unsuitable due to factors such as disturbance, high predator densities, and vegetative succession or die-off. Additional sites also appear necessary as a potential mea ...
... Additionally, alternate nesting sites are important for colonial waterbirds during years in which traditional or preferred sites are unsuitable due to factors such as disturbance, high predator densities, and vegetative succession or die-off. Additional sites also appear necessary as a potential mea ...
Bird Island Biodiversity Action Plan
... Bird Island provides significant habitat values for many bird species, including seabirds and waders of state, national and international conservation significance. Ten native bird species have been observed to breed on the island, with another three species considered to possibly breed there. Of th ...
... Bird Island provides significant habitat values for many bird species, including seabirds and waders of state, national and international conservation significance. Ten native bird species have been observed to breed on the island, with another three species considered to possibly breed there. Of th ...
Population ecology of the Three-toed Woodpecker under
... from 1996-1999. Patch suitability for a resident woodpecker was estimated in relation to seasonal and inter-annual changes in prey availability and profitability. The methods used to clarify dietary preferences and sample prey populations included bark sampling and insect trapping with window-flight ...
... from 1996-1999. Patch suitability for a resident woodpecker was estimated in relation to seasonal and inter-annual changes in prey availability and profitability. The methods used to clarify dietary preferences and sample prey populations included bark sampling and insect trapping with window-flight ...
Macroecology of Microbes – Biogeography of the
... globe (Smith and Read 1997; Trappe 1987; Read 1991). All AM fungi are members of the newly created phylum Glomeromycota (Schüβler 2001). They inhabit most latitudes and terrestrial ecosystems worldwide, including both natural and human impacted systems. Despite their prevalence in the environment an ...
... globe (Smith and Read 1997; Trappe 1987; Read 1991). All AM fungi are members of the newly created phylum Glomeromycota (Schüβler 2001). They inhabit most latitudes and terrestrial ecosystems worldwide, including both natural and human impacted systems. Despite their prevalence in the environment an ...
Thesis - Rufford Small Grants
... selected habitat how foraging animals should partition time between competing fitness enhancing activities. In the former, with predation risk as an additional factor, I show the habitat selection theory still applies but there are new and interesting wrinkles brought on by conflicting tradeoffs of ...
... selected habitat how foraging animals should partition time between competing fitness enhancing activities. In the former, with predation risk as an additional factor, I show the habitat selection theory still applies but there are new and interesting wrinkles brought on by conflicting tradeoffs of ...
8 Conflicts over biodiversity
... it is not only the loss of species per se that is worrying, it is particularly the destruction and alteration of their habitats which is crucially important. Loss of habitat area and habitat diversity reduces the Earth's capacity to support viable populations. Indeed, the primary cause of biodiversi ...
... it is not only the loss of species per se that is worrying, it is particularly the destruction and alteration of their habitats which is crucially important. Loss of habitat area and habitat diversity reduces the Earth's capacity to support viable populations. Indeed, the primary cause of biodiversi ...
The interaction between predation and competition: a review and
... P. Hämback and A. Beckerman (unpublished observations) present a similar review of studies focused more specifically on the effect of herbivory on plant competition. Although these results are consistent with theory, for many fitness measures there are statistical as well as biological causes under ...
... P. Hämback and A. Beckerman (unpublished observations) present a similar review of studies focused more specifically on the effect of herbivory on plant competition. Although these results are consistent with theory, for many fitness measures there are statistical as well as biological causes under ...
The interaction between predation and competition: a review and
... P. Hämback and A. Beckerman (unpublished observations) present a similar review of studies focused more specifically on the effect of herbivory on plant competition. Although these results are consistent with theory, for many fitness measures there are statistical as well as biological causes under ...
... P. Hämback and A. Beckerman (unpublished observations) present a similar review of studies focused more specifically on the effect of herbivory on plant competition. Although these results are consistent with theory, for many fitness measures there are statistical as well as biological causes under ...
Ecological Implications of Reptile Mesopredator Release in Arid
... some small reptiles following removal of exotic mammalian predators in a landscape-scale reserve in arid South Australia. We used counts of Sand Goanna (Varanus gouldii) tracks and diggings as a surrogate activity index in paddock-scale treatments with different assemblages of feral predators and re ...
... some small reptiles following removal of exotic mammalian predators in a landscape-scale reserve in arid South Australia. We used counts of Sand Goanna (Varanus gouldii) tracks and diggings as a surrogate activity index in paddock-scale treatments with different assemblages of feral predators and re ...
Exploring indirect effects of biological invasions on native ecosystems
... Invasive species can have important implications for the health of ecosystems. The invasion and spread of harmful species has increased in the past several decades because of human-caused introduction and disturbance (Elton 1958, Wilcove et al. 1998), and invasives are becoming key factors in global ...
... Invasive species can have important implications for the health of ecosystems. The invasion and spread of harmful species has increased in the past several decades because of human-caused introduction and disturbance (Elton 1958, Wilcove et al. 1998), and invasives are becoming key factors in global ...
Unit 5 test Answer Section
... A) have high genetic diversity B) are more response to environmental changes than r-strategists C) exhibit fast rates of evolution D) are generally less adaptable to change than rstrategists E) reach reproductive age rapidly ...
... A) have high genetic diversity B) are more response to environmental changes than r-strategists C) exhibit fast rates of evolution D) are generally less adaptable to change than rstrategists E) reach reproductive age rapidly ...
South Australian Arid Lands Biodiversity Strategy
... The Finke bioregion, straddling the Northern Territory and South Australia border is characterised by sand plains and dissected uplands. In the north western corner of the SAAL region, gently undulating plains with some granite inselbergs and silcrete-capped mesas grade into silcretecapped tableland ...
... The Finke bioregion, straddling the Northern Territory and South Australia border is characterised by sand plains and dissected uplands. In the north western corner of the SAAL region, gently undulating plains with some granite inselbergs and silcrete-capped mesas grade into silcretecapped tableland ...
Download chapter 1: Introduction
... 1977). Each of these three rodents is native to Asia, and was unintentionally introduced to the Hawaiian Islands. The Norway rat is native to temperate Asia, and most abundant in cities and farms in Hawaii where food from domestic and agricultural sources are plentiful. Thus, it is an uncommon roden ...
... 1977). Each of these three rodents is native to Asia, and was unintentionally introduced to the Hawaiian Islands. The Norway rat is native to temperate Asia, and most abundant in cities and farms in Hawaii where food from domestic and agricultural sources are plentiful. Thus, it is an uncommon roden ...
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.