A REPORT OF ORCONECTES (FAXONIUS) LIMOSUS
... Eastern place in Europe. In most parts of the world, non-indigenous species are among the most important threats to freshwater biodiversity and ecosystem function (15). The occurrence of O. limosus represents a potential danger, especially for the native Danube species A. leptodactylus, but also for ...
... Eastern place in Europe. In most parts of the world, non-indigenous species are among the most important threats to freshwater biodiversity and ecosystem function (15). The occurrence of O. limosus represents a potential danger, especially for the native Danube species A. leptodactylus, but also for ...
Western Arnhem Plateau - Department of Infrastructure, Planning
... Calytrix Faucicla Sites, and Calytrix Verticillata Sites (Australian Heritage Council). Much of the eastern portion of the plateau will be incorporated in the proposed Warddeken Indigenous Protected Area (Warddeken Land Management Limited in prep.) The plateau area is proposed to be nominated by Bir ...
... Calytrix Faucicla Sites, and Calytrix Verticillata Sites (Australian Heritage Council). Much of the eastern portion of the plateau will be incorporated in the proposed Warddeken Indigenous Protected Area (Warddeken Land Management Limited in prep.) The plateau area is proposed to be nominated by Bir ...
Dasyurus maculatus - profile (PDF 630 KB)
... NPWS in prep.) • Loss of large hollow logs and other potential den sites (Scotts 1992) • Competition for food and predation by foxes and cats (Edgar & Belcher 1995; Dickman & Read 1992) • Spread of epidemics, such as a parasitic protozoan, by cats to the Quolls (Edgar & Belcher 1995; Dickman & Read ...
... NPWS in prep.) • Loss of large hollow logs and other potential den sites (Scotts 1992) • Competition for food and predation by foxes and cats (Edgar & Belcher 1995; Dickman & Read 1992) • Spread of epidemics, such as a parasitic protozoan, by cats to the Quolls (Edgar & Belcher 1995; Dickman & Read ...
Predicting ecosystem stability from community
... et al. 2010; Allan et al. 2011). The derivation proceeds as follows. First, we compute the deterministic equilibrium values of model (1) in the absence of any stochasticity. Second, we assume that the system reaches a stationary state, and we linearise Equations (1) and (2) around the equilibrium by ...
... et al. 2010; Allan et al. 2011). The derivation proceeds as follows. First, we compute the deterministic equilibrium values of model (1) in the absence of any stochasticity. Second, we assume that the system reaches a stationary state, and we linearise Equations (1) and (2) around the equilibrium by ...
(Introduced) species
... missing at an alarming rate — on the order of 100 to 1000 times the background rate, estimated from fossil records to be from one to ten species/year (Pimm, et al., 1995 and others). Some estimates of current rates are much higher. There have been five mass extinctions in the past 500 million years, ...
... missing at an alarming rate — on the order of 100 to 1000 times the background rate, estimated from fossil records to be from one to ten species/year (Pimm, et al., 1995 and others). Some estimates of current rates are much higher. There have been five mass extinctions in the past 500 million years, ...
Species loss and secondary extinctions in simple and complex
... absence of consumers (bi > 0) and consumers die in the absence of prey (bi < 0). The growth rate for the basal species is set to 1. The mortality rates for the consumers are randomly drawn from the uniform distribution (−0·001 0) and are then sorted in such way that the secondary consumers are assig ...
... absence of consumers (bi > 0) and consumers die in the absence of prey (bi < 0). The growth rate for the basal species is set to 1. The mortality rates for the consumers are randomly drawn from the uniform distribution (−0·001 0) and are then sorted in such way that the secondary consumers are assig ...
Management of interacting invasives: ecosystem approaches
... the majority of past management actions for alien species has been the formation of separate control or eradication programmes, and most often for the most visibly destructive species (Courchamp and Caut 2005). While such single-species eradications may be successful in terms of their removal of the ...
... the majority of past management actions for alien species has been the formation of separate control or eradication programmes, and most often for the most visibly destructive species (Courchamp and Caut 2005). While such single-species eradications may be successful in terms of their removal of the ...
JVS 2391 Cavieres
... plant’ species, that is species which ameliorate the abiotic environment for other species and facilitate establishment beneath their canopies (Callaway & Walker 1997). Commonly reported ameliorative influences of the nurse plant canopy include: cooler temperatures and lower evaporative stress, incr ...
... plant’ species, that is species which ameliorate the abiotic environment for other species and facilitate establishment beneath their canopies (Callaway & Walker 1997). Commonly reported ameliorative influences of the nurse plant canopy include: cooler temperatures and lower evaporative stress, incr ...
Habitat Fragmentation
... fragmentation often do not provide the food and cover resources for many species that do attempt to use them • This can result in an increased risk of death by predation, if the animal has to venture beyond the cover of the patch to find new food resources, or starvation. • Leaving the safely on int ...
... fragmentation often do not provide the food and cover resources for many species that do attempt to use them • This can result in an increased risk of death by predation, if the animal has to venture beyond the cover of the patch to find new food resources, or starvation. • Leaving the safely on int ...
20Molles5e
... Proposes many species may attempt to colonize newly available space. Only certain species will establish. Colonizers “Pioneer Species” modify environment so it becomes less suitable for themselves and more suitable for species of later successional stages. ...
... Proposes many species may attempt to colonize newly available space. Only certain species will establish. Colonizers “Pioneer Species” modify environment so it becomes less suitable for themselves and more suitable for species of later successional stages. ...
Conservation status of Hooded Plover in New South Wales
... (Bitou Bush), Ammophila arenaria (Marram Grass)); oil spills; kelp harvesting; and trampling by livestock. ‘Predation by the European Red Fox Vulpes vulpes’, ‘Invasion of native plant communities by Chrysanthemoides monilifera’ and ‘Invasion of native plant communities by exotic perennial grasses’ a ...
... (Bitou Bush), Ammophila arenaria (Marram Grass)); oil spills; kelp harvesting; and trampling by livestock. ‘Predation by the European Red Fox Vulpes vulpes’, ‘Invasion of native plant communities by Chrysanthemoides monilifera’ and ‘Invasion of native plant communities by exotic perennial grasses’ a ...
Histological Description of the Male and Female Gonads in Tegula
... oxide and then permeated with a propylene oxide/epoxy mixture and embedded in Epon 812. Very thin 0.5-µm–thick sections were obtained for staining with toluidine blue. ...
... oxide and then permeated with a propylene oxide/epoxy mixture and embedded in Epon 812. Very thin 0.5-µm–thick sections were obtained for staining with toluidine blue. ...
Global Climate Change and Wildlife
... trees bloom earlier in response to warmer springs, but pollinators do not hatch earlier, disruptions (e.g., failed or inadequate pollination) may occur. Mismatches can occur between predators and prey, herbivorous insects and host plants, and pollinators and flowering plants, among others. Scientist ...
... trees bloom earlier in response to warmer springs, but pollinators do not hatch earlier, disruptions (e.g., failed or inadequate pollination) may occur. Mismatches can occur between predators and prey, herbivorous insects and host plants, and pollinators and flowering plants, among others. Scientist ...
MHI False Killer Whale - Endangered Species Coalition
... al. 2014). Little to no immigration from other areas into the Hawaiian insular population is evident (Martien et al. 2014). False killer whales form strong long-term social bonds (Baird et al. 2008) and are usually found in social groups of 10 or 20 that, in Hawaii, belong to much larger groups of u ...
... al. 2014). Little to no immigration from other areas into the Hawaiian insular population is evident (Martien et al. 2014). False killer whales form strong long-term social bonds (Baird et al. 2008) and are usually found in social groups of 10 or 20 that, in Hawaii, belong to much larger groups of u ...
full text
... combined information offers a strong framework to study how tropical avian communities are ...
... combined information offers a strong framework to study how tropical avian communities are ...
Chapter 11 power point
... ecosystems (forests and grasslands) are the first to be modified by humans. Pressures to modify the environment are greatest in areas with high population density. ...
... ecosystems (forests and grasslands) are the first to be modified by humans. Pressures to modify the environment are greatest in areas with high population density. ...
Conservation of species interaction networks
... but not necessarily stability of species composition. An additional short-term conservation goal is to enhance the rates of key processes and services. We discuss in the following sections which attributes of network structure are relevant to these goals. In particular, we focus on pollination and b ...
... but not necessarily stability of species composition. An additional short-term conservation goal is to enhance the rates of key processes and services. We discuss in the following sections which attributes of network structure are relevant to these goals. In particular, we focus on pollination and b ...
Managing Wildlife Habitats
... States. Similar studies have not been conducted in the western United States, but cowbirds do abound here, and population trends for many western songbirds show declines similar to those in the east. Edge effects also can influence what plants grow in an area. Edge zones usually are drier and less s ...
... States. Similar studies have not been conducted in the western United States, but cowbirds do abound here, and population trends for many western songbirds show declines similar to those in the east. Edge effects also can influence what plants grow in an area. Edge zones usually are drier and less s ...
185 - University of Connecticut
... each plot in each season as the mean number of individuals captured per night within that season. Although this measure underestimates true density, it has advantages over other measures. It does not require marking of snails for subsequent identification, imposes few assumptions, and is not biased ...
... each plot in each season as the mean number of individuals captured per night within that season. Although this measure underestimates true density, it has advantages over other measures. It does not require marking of snails for subsequent identification, imposes few assumptions, and is not biased ...
Knight, J.D.M. - Journal of Threatened Taxa
... (Bijukumar 2000). Piranhas are shoaling predators which not only feed on smaller fish but also occasionally take a bite out of fins, scales and muscle of larger fish, in the process mutilating them (Sazima & Machado 1990). As they are predators, they not only eat up small native fish but also tend t ...
... (Bijukumar 2000). Piranhas are shoaling predators which not only feed on smaller fish but also occasionally take a bite out of fins, scales and muscle of larger fish, in the process mutilating them (Sazima & Machado 1990). As they are predators, they not only eat up small native fish but also tend t ...
Global Climate Change and Wildlife
... shift accordingly. If a phenological change in one species does not match linked changes in an interdependent species, an ecological mismatch can occur.14 For example, if certain trees bloom earlier in response to warmer springs, but pollinators do not hatch earlier, disruptions (e.g., failed or ina ...
... shift accordingly. If a phenological change in one species does not match linked changes in an interdependent species, an ecological mismatch can occur.14 For example, if certain trees bloom earlier in response to warmer springs, but pollinators do not hatch earlier, disruptions (e.g., failed or ina ...
Indirect Effects of a Keystone Herbivore Elevate Local Animal Diversity
... indirect effect on invertebrate species richness and herpetofaunal abundance. The most plausible explanatory hypotheses involve growth of favorable plant species in nutrient-rich soil or creation of a preferable microhabitat. However, we should consider other possible explanations. First, our sampli ...
... indirect effect on invertebrate species richness and herpetofaunal abundance. The most plausible explanatory hypotheses involve growth of favorable plant species in nutrient-rich soil or creation of a preferable microhabitat. However, we should consider other possible explanations. First, our sampli ...
The Implications of Niche Construction and Ecosystem
... species, lawmakers have proposed shortcuts whereby the protection of a single species is designed indirectly to protect the regional biota (Simberloff 1998). These “surrogate species” can be broadly categorized into three classes (Andelman and Fagan 2000): (1) flagships, charismatic species that att ...
... species, lawmakers have proposed shortcuts whereby the protection of a single species is designed indirectly to protect the regional biota (Simberloff 1998). These “surrogate species” can be broadly categorized into three classes (Andelman and Fagan 2000): (1) flagships, charismatic species that att ...
Biodiversity and Plant-Animal Coevolution
... dispersal (Dirzo and Miranda, 1990; Kearns, Inouye, et al., 1998; S. J. Wright, 2003). Looking back through time, evidence for these effects comes from the fossil record. Episodes of insect diversity decline, such as the ones during the Middle to Late Pennsylvanian extinction, during the Permian eve ...
... dispersal (Dirzo and Miranda, 1990; Kearns, Inouye, et al., 1998; S. J. Wright, 2003). Looking back through time, evidence for these effects comes from the fossil record. Episodes of insect diversity decline, such as the ones during the Middle to Late Pennsylvanian extinction, during the Permian eve ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.