Marine Invaders: The Lionfish - Miami
... and lionfish they come across. People wishing to prepare lionfish for cooking should cut off the venomous spines before cleaning the fish to avoid being stung. What to do if stung? Since lionfish tend to keep their fins spread out, divers can get stung if they are not careful. The sting from a lionf ...
... and lionfish they come across. People wishing to prepare lionfish for cooking should cut off the venomous spines before cleaning the fish to avoid being stung. What to do if stung? Since lionfish tend to keep their fins spread out, divers can get stung if they are not careful. The sting from a lionf ...
Pelagic Organism Decline Progress Report: 2007 Synthesis of Results
... POD studies. Using this approach, we examined the multiple types of evidence to develop plausible linkages within our conceptual models. This approach was especially important in the development of the four “species models.” As an outcome of this approach, the present synthesis of the POD results fo ...
... POD studies. Using this approach, we examined the multiple types of evidence to develop plausible linkages within our conceptual models. This approach was especially important in the development of the four “species models.” As an outcome of this approach, the present synthesis of the POD results fo ...
Detritus, trophic dynamics and biodiversity
... microbes, protozoa and invertebrates. Extensive bioturbation activity by the grassland soil fauna leads to a well-mixed horizontal profile (Coleman et al. 1983). The Alfisols and Spodosols, soil orders that characterize many forested ecosystems, are impacted more by the decomposition of relatively r ...
... microbes, protozoa and invertebrates. Extensive bioturbation activity by the grassland soil fauna leads to a well-mixed horizontal profile (Coleman et al. 1983). The Alfisols and Spodosols, soil orders that characterize many forested ecosystems, are impacted more by the decomposition of relatively r ...
The invasive Pacific oyster, Crassostrea gigas, in
... 1 Background and aim ......................................................................................................................................... 13 2 The active and passive dispersal of Crassostrea gigas................................................................................... ...
... 1 Background and aim ......................................................................................................................................... 13 2 The active and passive dispersal of Crassostrea gigas................................................................................... ...
Key - Scioly.org
... Example (1pt): deer hunting , exterminating coachroaches, etc. any scenario in which humans reduce the numbers of a species population because they disturb the human population, even if there are technically enough resources to support the species at current or higher levels (ie, the population is b ...
... Example (1pt): deer hunting , exterminating coachroaches, etc. any scenario in which humans reduce the numbers of a species population because they disturb the human population, even if there are technically enough resources to support the species at current or higher levels (ie, the population is b ...
Modelling coexistence of plant functional types in grassland
... to gain a more detailed understanding of the mechanisms of species coexistence. For this purpose an individual-based, spatially-explicit simulation model was developed that describes the life cycle of plant individuals including their interaction with other plants. Instead of real species 72 plant f ...
... to gain a more detailed understanding of the mechanisms of species coexistence. For this purpose an individual-based, spatially-explicit simulation model was developed that describes the life cycle of plant individuals including their interaction with other plants. Instead of real species 72 plant f ...
USGS DDS-43, Non-Native Trout
... As a result of these data gaps, I obtained summary information for the entire study area, but all detailed analyses of the current distribution of trout in the Sierra Nevada are based on Sequioa, Kings Canyon, and Yosemite National Parks and that portion of the Sierra Nevada within DFG Region 5 (fig ...
... As a result of these data gaps, I obtained summary information for the entire study area, but all detailed analyses of the current distribution of trout in the Sierra Nevada are based on Sequioa, Kings Canyon, and Yosemite National Parks and that portion of the Sierra Nevada within DFG Region 5 (fig ...
Untitled - Université de Sherbrooke
... sustainable levels, and the humid tropics appear to be where hunting is affecting wildlife the most. It is believed that the rapid acceleration in losses of tropical forest species occurred in Asian forests first. Africa is now experiencing similar significant losses and within the next 10-20 years, ...
... sustainable levels, and the humid tropics appear to be where hunting is affecting wildlife the most. It is believed that the rapid acceleration in losses of tropical forest species occurred in Asian forests first. Africa is now experiencing similar significant losses and within the next 10-20 years, ...
fisken og
... areas there is a limited to moderate risk that a bio-invasion of C. gigas will develop. For Biogenic reefs and Sub-littoral sediment in high energy areas there is a moderate to high risk for a bio-invasion. A risk assessment was performed for each of the four habitat types: It is concluded that for ...
... areas there is a limited to moderate risk that a bio-invasion of C. gigas will develop. For Biogenic reefs and Sub-littoral sediment in high energy areas there is a moderate to high risk for a bio-invasion. A risk assessment was performed for each of the four habitat types: It is concluded that for ...
SEA PENS AND BURROWING MEGAFAUNA
... Various megafaunal burrowers are preyed upon by fish, but very few specialist predator of sea pens are known from British waters. The importance of predation as a structuring factor in these biotopes is unknown. Sediment disturbance by the larger burrowers can either enhance or reduce the abundance ...
... Various megafaunal burrowers are preyed upon by fish, but very few specialist predator of sea pens are known from British waters. The importance of predation as a structuring factor in these biotopes is unknown. Sediment disturbance by the larger burrowers can either enhance or reduce the abundance ...
Position Paper - Waddenacademie
... fisheries, restoration of natural dynamics in habitats and improving connectivity between marine and freshwater areas for migratory fish. The Wadden Academy was invited by the Waddenfonds to make an inventory of the most effective measures to strengthen (migratory) fish stocks in the Wadden Sea area ...
... fisheries, restoration of natural dynamics in habitats and improving connectivity between marine and freshwater areas for migratory fish. The Wadden Academy was invited by the Waddenfonds to make an inventory of the most effective measures to strengthen (migratory) fish stocks in the Wadden Sea area ...
The Return of the Wolf
... scavenging community through their supply of carcass remains from their prey (Wilmers et al., 2003a; Mattisson et al., in press). Utilization of carcasses during periods of prey shortage, in stressful environmental situations, or as an alternative food resource may have substantial impacts on popula ...
... scavenging community through their supply of carcass remains from their prey (Wilmers et al., 2003a; Mattisson et al., in press). Utilization of carcasses during periods of prey shortage, in stressful environmental situations, or as an alternative food resource may have substantial impacts on popula ...
The Association of Ophiothrix lineata and Callyspongia vaginalis: A
... In cases where the two taxa are invariably associated there may be a strict symbiosis, with at least the brittlestar benefiting from the association. The brittlestar Ophiothrix lineata LYMAN,for example, has been reported as an associate of various sponge species. This study examines the interaction ...
... In cases where the two taxa are invariably associated there may be a strict symbiosis, with at least the brittlestar benefiting from the association. The brittlestar Ophiothrix lineata LYMAN,for example, has been reported as an associate of various sponge species. This study examines the interaction ...
harmful algal blooms
... have caused more than $1 billion in losses in the United States, with resources diverted to monitoring programs, closures of shellfish beds and coastal fisheries, severe reductions in local and regional tourism and associated service industries, public illness, and medical treatments and advisories. ...
... have caused more than $1 billion in losses in the United States, with resources diverted to monitoring programs, closures of shellfish beds and coastal fisheries, severe reductions in local and regional tourism and associated service industries, public illness, and medical treatments and advisories. ...
The Return of the Wolf
... scavenging community through their supply of carcass remains from their prey (Wilmers et al., 2003a; Mattisson et al., in press). Utilization of carcasses during periods of prey shortage, in stressful environmental situations, or as an alternative food resource may have substantial impacts on popula ...
... scavenging community through their supply of carcass remains from their prey (Wilmers et al., 2003a; Mattisson et al., in press). Utilization of carcasses during periods of prey shortage, in stressful environmental situations, or as an alternative food resource may have substantial impacts on popula ...
Trait-dependent modification of facilitation on cobble
... Abstract. Fundamental gaps remain in our knowledge of how positive species interactions, such as facilitation and mutualism, structure and maintain populations and communities. Foundation species create extensive biogenic habitats, but we know little of how their traits, such as density, age, and pa ...
... Abstract. Fundamental gaps remain in our knowledge of how positive species interactions, such as facilitation and mutualism, structure and maintain populations and communities. Foundation species create extensive biogenic habitats, but we know little of how their traits, such as density, age, and pa ...
recovery potential assessment for atlantic whitefish
... risk of extirpation as a result of catastrophic events. Replication of habitat conditions described under the first point is desirable. Third, other things being equal, larger populations have lower extinction risks than smaller populations and these tend to occur in larger watersheds. Watershed siz ...
... risk of extirpation as a result of catastrophic events. Replication of habitat conditions described under the first point is desirable. Third, other things being equal, larger populations have lower extinction risks than smaller populations and these tend to occur in larger watersheds. Watershed siz ...
The Decimation of Endemic Hawaiian Tree
... analyses, were converted to annual survi- shells is impossible; we can estimate only vorships for each year class. the age at which snails become mature. Size at birth was estimated as the average Using this estimate as a basis for age at first length of all snails less than 5.00 mm long sighting, t ...
... analyses, were converted to annual survi- shells is impossible; we can estimate only vorships for each year class. the age at which snails become mature. Size at birth was estimated as the average Using this estimate as a basis for age at first length of all snails less than 5.00 mm long sighting, t ...
The Ecosystem Role of Fishes in Lotic Environments
... fisheries, improved water quality, and recreational opportunities to many individuals. In rivers, interactions among fishes, other stream plants and animals, and the physical river environment can influence continued provision of these valuable services. However, the role played by many freshwater f ...
... fisheries, improved water quality, and recreational opportunities to many individuals. In rivers, interactions among fishes, other stream plants and animals, and the physical river environment can influence continued provision of these valuable services. However, the role played by many freshwater f ...
“Fishing on Alentejo rocky shores ‐ intensity, yield and protection
... implemented since 2006 and, more recently, a new management plan was adopted, adding more restrictive regulations. This study aims to analyse spatial and temporal variation of intensity and yield of fishing activities on Alentejo rocky shores and evaluate effects ...
... implemented since 2006 and, more recently, a new management plan was adopted, adding more restrictive regulations. This study aims to analyse spatial and temporal variation of intensity and yield of fishing activities on Alentejo rocky shores and evaluate effects ...
Treasures in the Sea
... However, the ocean’s resources are not unlimited.We risk losing them if we use too much, or if we damage marine environments through harmful fishing, boating, and diving practices, uncontrolled coastal development, and pollution. Caring for The Bahamas’ marine treasures today is essential to ensure ...
... However, the ocean’s resources are not unlimited.We risk losing them if we use too much, or if we damage marine environments through harmful fishing, boating, and diving practices, uncontrolled coastal development, and pollution. Caring for The Bahamas’ marine treasures today is essential to ensure ...
Blackfordia virginica: The Black Sea Jellyfish
... and monitoring hulls for fouling by B.virginica polyps is also important to ensure it is not introduced to new environments. In addition to controlling introduction, there are some measures which could decrease the likelihood of B.virginica becoming established. Since their diet depends on zooplankt ...
... and monitoring hulls for fouling by B.virginica polyps is also important to ensure it is not introduced to new environments. In addition to controlling introduction, there are some measures which could decrease the likelihood of B.virginica becoming established. Since their diet depends on zooplankt ...
Effects of productivity, disturbance, and ecosystem size on food
... extinctions differs from many metapopulation scenarios, where extinctions arise in small populations due to demographic stochasticity, even in constant environments. When disturbance hits a local population, the population goes extinct with a certain probability. If we assume that these disturbances ...
... extinctions differs from many metapopulation scenarios, where extinctions arise in small populations due to demographic stochasticity, even in constant environments. When disturbance hits a local population, the population goes extinct with a certain probability. If we assume that these disturbances ...
Recovery, Conservation, and Survival under the Endangered
... Protecting and recovering endangered and threatened species is bad business. It is a short-term, high-risk, and high-cost proposition-not exactly a formula for success. It is also an unpopular business. Resource users cringe at the prospect of the burdensome regulations and widespread litigation tha ...
... Protecting and recovering endangered and threatened species is bad business. It is a short-term, high-risk, and high-cost proposition-not exactly a formula for success. It is also an unpopular business. Resource users cringe at the prospect of the burdensome regulations and widespread litigation tha ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.