Response of a semidesert grassland to 16 years of rest from grazing
... In addition, given the homogeneity of the site, the shift in forb species composition would be expected to be influenced by herbivory. Bock et al. (1984) reported similar findings, calling vegetation changes observed on the sanctuary dramatic. These changes are only partially explained by the influe ...
... In addition, given the homogeneity of the site, the shift in forb species composition would be expected to be influenced by herbivory. Bock et al. (1984) reported similar findings, calling vegetation changes observed on the sanctuary dramatic. These changes are only partially explained by the influe ...
MF2222 Biological Control of Insect Pests on
... Biological Control In the simplest terms, biological control is the reduction of pest populations brought about through the actions of other living organisms, often collectively referred to as natural enemies or beneficial species. Virtually all insect and mite pests have some natural enemies, altho ...
... Biological Control In the simplest terms, biological control is the reduction of pest populations brought about through the actions of other living organisms, often collectively referred to as natural enemies or beneficial species. Virtually all insect and mite pests have some natural enemies, altho ...
Niche and fitness differences relate the maintenance of
... the mechanisms that drive the functional consequences of biodiversity and their connections with those that determine the maintenance of biodiversity is key to making BEF research more predictive and more relevant to natural, non-experimentally manipulated ecosystems (Loreau 2010). The recent theore ...
... the mechanisms that drive the functional consequences of biodiversity and their connections with those that determine the maintenance of biodiversity is key to making BEF research more predictive and more relevant to natural, non-experimentally manipulated ecosystems (Loreau 2010). The recent theore ...
VERTEBRATES: FISH, AMPHIBIANS, REPTILES, BIRDS, MAMMALS
... characterized as both extremely diverse and dynamic. For most species, these associations are inseparable from equally critical upland habitats, and population dynamics are influenced by processes acting in both aquatic and upland habitats. Current knowledge of the ecology of amphibians underscores ...
... characterized as both extremely diverse and dynamic. For most species, these associations are inseparable from equally critical upland habitats, and population dynamics are influenced by processes acting in both aquatic and upland habitats. Current knowledge of the ecology of amphibians underscores ...
Biological Control of Insect Pests on Field Crops
... Biological Control In the simplest terms, biological control is the reduction of pest populations brought about through the actions of other living organisms, often collectively referred to as natural enemies or beneficial species. Virtually all insect and mite pests have some natural enemies, altho ...
... Biological Control In the simplest terms, biological control is the reduction of pest populations brought about through the actions of other living organisms, often collectively referred to as natural enemies or beneficial species. Virtually all insect and mite pests have some natural enemies, altho ...
V h -t
... includes the Roggeveld and Nuweveld Mountain Ranges to just southwest of Fraserburg, while the southern limit includes the Tanqua and Ceres Karoo to where the Swartrug Mountains and the Bontberg Mountains meet north of Ceres. The Mountain Renosterveld discussed in the current article is found on the ...
... includes the Roggeveld and Nuweveld Mountain Ranges to just southwest of Fraserburg, while the southern limit includes the Tanqua and Ceres Karoo to where the Swartrug Mountains and the Bontberg Mountains meet north of Ceres. The Mountain Renosterveld discussed in the current article is found on the ...
21 | CONSERVATION AND BIODIVERSITY
... adapting to other ecosystems. The loss of an ecosystem means the loss of the interactions between species, the loss of unique features of coadaptation, and the loss of biological productivity that an ecosystem is able to create. An example of a largely extinct ecosystem in North America is the prair ...
... adapting to other ecosystems. The loss of an ecosystem means the loss of the interactions between species, the loss of unique features of coadaptation, and the loss of biological productivity that an ecosystem is able to create. An example of a largely extinct ecosystem in North America is the prair ...
The role of plant species in biomass production and response to
... assemblages is caused more by complementarity than by sampling effects (Loreau & Hector 2001; Tilman et al. 2001), yet how species interactions generate complementarity is poorly understood. The lack of understanding of these interactions is especially acute for aggregate properties of the ecosystem ...
... assemblages is caused more by complementarity than by sampling effects (Loreau & Hector 2001; Tilman et al. 2001), yet how species interactions generate complementarity is poorly understood. The lack of understanding of these interactions is especially acute for aggregate properties of the ecosystem ...
Alberta`s Invasive Species - Alberta Conservation Association
... trapped and translocated from Elk Island, where they were hunted on the Suffield Base, two different ways of balancing animal numbers with range. While it is too simple to say “If we don’t kill them they will overpopulate and starve,” indeed there is often a significant annual surplus of game specie ...
... trapped and translocated from Elk Island, where they were hunted on the Suffield Base, two different ways of balancing animal numbers with range. While it is too simple to say “If we don’t kill them they will overpopulate and starve,” indeed there is often a significant annual surplus of game specie ...
Hegland and Totland 2005. Relationships between species` floral
... variation in floral traits among species (but see McCall and Primack 1992). Several relevant ecological questions can be addressed by investigating this issue. First, can commonly observed patterns within species, such as increased pollinator attraction to larger flowers (Conner and Rush 1996; Gouls ...
... variation in floral traits among species (but see McCall and Primack 1992). Several relevant ecological questions can be addressed by investigating this issue. First, can commonly observed patterns within species, such as increased pollinator attraction to larger flowers (Conner and Rush 1996; Gouls ...
this PDF file - Florida Online Journals
... the needs to attain mates and avoid being eaten. For example, the bright and bold upper wings of many male butterflies are exposed in flight and used in intraspecific signaling while the under wings, exposed when resting and feeding, are cryptically colored to avoid predation. Such visual compromise ...
... the needs to attain mates and avoid being eaten. For example, the bright and bold upper wings of many male butterflies are exposed in flight and used in intraspecific signaling while the under wings, exposed when resting and feeding, are cryptically colored to avoid predation. Such visual compromise ...
Ctenophores of the Baltic and adjacent Seas – the invader
... gracilis - together with thousands of lobed ctenophores in the warm surface water. As B. infundilum is a cold water species, it must have been Mnemiopsis. The temperatures in the uppermost water masses outside TMBL have been exceptionally warm during the late summer and autumn in 2006, approximately ...
... gracilis - together with thousands of lobed ctenophores in the warm surface water. As B. infundilum is a cold water species, it must have been Mnemiopsis. The temperatures in the uppermost water masses outside TMBL have been exceptionally warm during the late summer and autumn in 2006, approximately ...
most threatened bird habitats in the US
... tax receipts amount to $2.7 billion. The report is available at www.outdoorindustryfoundation.org. In 2001, the U.S. Fish and Wildlife Service reported similar findings: a $38 billion contribution to the economy from bird and other wildlife watching. One-third of outdoor enthusiasts take at least on ...
... tax receipts amount to $2.7 billion. The report is available at www.outdoorindustryfoundation.org. In 2001, the U.S. Fish and Wildlife Service reported similar findings: a $38 billion contribution to the economy from bird and other wildlife watching. One-third of outdoor enthusiasts take at least on ...
Gauging the impact of fishing mortality on non
... Despite many advances in understanding the ecosystem effects of fishing (ICES, 1994, 1995, 1996; Jennings and Kaiser, 1998; Lindeboom and de Groot, 1998; Hall, 1999; Kaiser and de Groot, 2000), the direct and indirect impacts of fishing on many non-target species remain poorly known. Because these sp ...
... Despite many advances in understanding the ecosystem effects of fishing (ICES, 1994, 1995, 1996; Jennings and Kaiser, 1998; Lindeboom and de Groot, 1998; Hall, 1999; Kaiser and de Groot, 2000), the direct and indirect impacts of fishing on many non-target species remain poorly known. Because these sp ...
Open or download EMP bulletin as a PDF file
... this trapping trial. The OANRP looks forward to sharing trial results and the program’s trapping efforts with other organizations dedicated to island ecosystem conservation at this year’s Hawai‘i Conservation Conference, July 16-18, at the Hawai‘i Convention Center. • Katie Franklin is a small verte ...
... this trapping trial. The OANRP looks forward to sharing trial results and the program’s trapping efforts with other organizations dedicated to island ecosystem conservation at this year’s Hawai‘i Conservation Conference, July 16-18, at the Hawai‘i Convention Center. • Katie Franklin is a small verte ...
VIII.6 - UCLA EEB
... cornerstone of evolutionary biology’s contribution to conservation, and this tradition has grown in the last few years. Three decades ago Frankel and Soulé (1981) emphasized the close connections between population genetics and conservation in conceptual areas ranging from minimum viable population ...
... cornerstone of evolutionary biology’s contribution to conservation, and this tradition has grown in the last few years. Three decades ago Frankel and Soulé (1981) emphasized the close connections between population genetics and conservation in conceptual areas ranging from minimum viable population ...
Variation of prey responses to cues from a
... predators, but rock rats can seek refuge in rocky outcrops which dingoes have limited access to (Trainor et al. 2000). Quolls inhabit these rocky outcrops and scree slopes and can also access some of the crevices used by rock rats (Woinarski et al. 2008) due to their relatively similar body size. Ro ...
... predators, but rock rats can seek refuge in rocky outcrops which dingoes have limited access to (Trainor et al. 2000). Quolls inhabit these rocky outcrops and scree slopes and can also access some of the crevices used by rock rats (Woinarski et al. 2008) due to their relatively similar body size. Ro ...
pest risk assessment - Department of Primary Industries, Parks
... The Lace Monitor (Varanus varius) is a large arboreal lizard which is found in eastern and southeastern Australia from Cape York Peninsula (Queensland) to south-eastern South Australia. Lace Monitors occur in well-timbered areas from dry woodlands to cool temperate forests in southern Australia. The ...
... The Lace Monitor (Varanus varius) is a large arboreal lizard which is found in eastern and southeastern Australia from Cape York Peninsula (Queensland) to south-eastern South Australia. Lace Monitors occur in well-timbered areas from dry woodlands to cool temperate forests in southern Australia. The ...
Wildlife Encounters by Lewis and Clark
... where wildlife was abundant and humans were not as “war zones” and areas with abundant humans and less wildlife as “game sinks.” Those authors concluded that human predation was responsible for the observed wildlife distribution. Lyman and Wolverton (2002) reexamined the same data and concluded that ...
... where wildlife was abundant and humans were not as “war zones” and areas with abundant humans and less wildlife as “game sinks.” Those authors concluded that human predation was responsible for the observed wildlife distribution. Lyman and Wolverton (2002) reexamined the same data and concluded that ...
Disentangling the effects of water and nutrients for studying the
... environmental conditions in order to also indirectly assess variations in neighbour effects. Due to the lack of studies with similar goals, we do not have any a priori hypotheses on variations in the outcomes of interactions in this experiment with alleviation of water and/or nutrient stresses. None ...
... environmental conditions in order to also indirectly assess variations in neighbour effects. Due to the lack of studies with similar goals, we do not have any a priori hypotheses on variations in the outcomes of interactions in this experiment with alleviation of water and/or nutrient stresses. None ...
How many parasites? - Princeton University
... most diverse parts of the world is thin at best. For example, Cribb et al. (13) estimated that in groupers (Epinephelinae)—one of the largest and most common groups of marine fish—parasitic trematodes have been recorded from only 62 of the 159 species, and from only 9 of 15 genera. The absences refl ...
... most diverse parts of the world is thin at best. For example, Cribb et al. (13) estimated that in groupers (Epinephelinae)—one of the largest and most common groups of marine fish—parasitic trematodes have been recorded from only 62 of the 159 species, and from only 9 of 15 genera. The absences refl ...
Ecology - Zanichelli online
... In parasitism, a population receives benefits at another’s expense. It occurs when individuals of a species consume only part of the tissues of individuals of another species, usually without killing them. Monotropa uniflora, also known as the ghost plant, does not contain chlorophyll. Instead of ge ...
... In parasitism, a population receives benefits at another’s expense. It occurs when individuals of a species consume only part of the tissues of individuals of another species, usually without killing them. Monotropa uniflora, also known as the ghost plant, does not contain chlorophyll. Instead of ge ...
The Mechanistic Approach of `The Theory of Island Biogeography
... Riddle, et al., 2010, p. 520). They substituted “one theory for many facts” (MacArthur & Wilson, 1967, p. 5). Moreover, they showed that the mathematical expression of the equilibrium model (see Figure 1, subsection 4.1) that is the central piece of the theory could be used to estimate various param ...
... Riddle, et al., 2010, p. 520). They substituted “one theory for many facts” (MacArthur & Wilson, 1967, p. 5). Moreover, they showed that the mathematical expression of the equilibrium model (see Figure 1, subsection 4.1) that is the central piece of the theory could be used to estimate various param ...
A case study in ecological succession
... to foresee NEON: “This is intended to be a permanent research station, with a longterm program of study … . Continued collaborative effort by various specialists working together will ultimately provide unusual insight into these interrelationships.” He supported the Field Station’s participation in ...
... to foresee NEON: “This is intended to be a permanent research station, with a longterm program of study … . Continued collaborative effort by various specialists working together will ultimately provide unusual insight into these interrelationships.” He supported the Field Station’s participation in ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.