Managing Florida Ponds for Fishing - EDIS
... than they can eat in 10 to 15 minutes. Also, do not feed them when the water temperature is below 60o F, or, above 95o F. Fish do not actively feed at these times. Excessive feeding can lead to the increased chance of fish kills due to low oxygen and can become costly. Feeding small quantities of fo ...
... than they can eat in 10 to 15 minutes. Also, do not feed them when the water temperature is below 60o F, or, above 95o F. Fish do not actively feed at these times. Excessive feeding can lead to the increased chance of fish kills due to low oxygen and can become costly. Feeding small quantities of fo ...
fur_rpt16
... the process necessary (i.e., Federal Register) to move toward a bear pelt tagging system similar to wolf, otter and bobcat that allows states to apply for CITES authority and then issue tags directly to bear hunters/trappers. Their primary concern appears to be their sense of a lack of demand, but t ...
... the process necessary (i.e., Federal Register) to move toward a bear pelt tagging system similar to wolf, otter and bobcat that allows states to apply for CITES authority and then issue tags directly to bear hunters/trappers. Their primary concern appears to be their sense of a lack of demand, but t ...
Click here to - Ian Somerhalder Foundation European
... brief in early July, with our response due later in July. No oral argument date has been set yet. Update May 7, 2012: From The Animal Legal Defense Find: Good news! In today’s hearing in Baton Rouge, District Judge Janice Clark agreed that the Animal Legal Defense Fund and two Louisiana residents ca ...
... brief in early July, with our response due later in July. No oral argument date has been set yet. Update May 7, 2012: From The Animal Legal Defense Find: Good news! In today’s hearing in Baton Rouge, District Judge Janice Clark agreed that the Animal Legal Defense Fund and two Louisiana residents ca ...
Journal of Animal - Centre d`études biologiques de Chizé
... processing rate. Removing the thorns from three of the species affected these parameters differently, according to the size and density of thorns. 3. Animals took larger bites from larger patches (branches), and bite mass declined as patch exploitation progressed, implying that animals were selectin ...
... processing rate. Removing the thorns from three of the species affected these parameters differently, according to the size and density of thorns. 3. Animals took larger bites from larger patches (branches), and bite mass declined as patch exploitation progressed, implying that animals were selectin ...
American Journal of Botany
... about how primary producer diversity influences the efficiency of resource use and biomass production in ecosystems, how primary producer diversity influences the transfer and recycling of biomass to other trophic groups in a food web, and the number of species and spatial /temporal scales at which ...
... about how primary producer diversity influences the efficiency of resource use and biomass production in ecosystems, how primary producer diversity influences the transfer and recycling of biomass to other trophic groups in a food web, and the number of species and spatial /temporal scales at which ...
American Journal of Botany
... about how primary producer diversity influences the efficiency of resource use and biomass production in ecosystems, how primary producer diversity influences the transfer and recycling of biomass to other trophic groups in a food web, and the number of species and spatial /temporal scales at which ...
... about how primary producer diversity influences the efficiency of resource use and biomass production in ecosystems, how primary producer diversity influences the transfer and recycling of biomass to other trophic groups in a food web, and the number of species and spatial /temporal scales at which ...
Week 8 2010
... A refuge for prey • If prey have a refuge, then a certain proportion can escape predation • Prey population in the refuge tolerates infinitely large predator population • Makes stable coexistence more likely ...
... A refuge for prey • If prey have a refuge, then a certain proportion can escape predation • Prey population in the refuge tolerates infinitely large predator population • Makes stable coexistence more likely ...
CO2, nitrogen, and diversity differentially affect seed production of
... Abstract. Plant species composition and diversity is often influenced by early life history stages; thus, global change could dramatically affect plant community structure by altering seed production. Unfortunately, plant reproductive responses to global change are rarely studied in field settings, ma ...
... Abstract. Plant species composition and diversity is often influenced by early life history stages; thus, global change could dramatically affect plant community structure by altering seed production. Unfortunately, plant reproductive responses to global change are rarely studied in field settings, ma ...
Document
... et al., 2005) and in vitro feeding experiments (e.g. Strom et al., 2007) indicate that the potentially major grazers of phytoplankton and HNF, ciliates and dinoflagellates, are kept in check by copepod grazing (e.g. Saiz and Calbet, 2011; Smetacek, 1981) but again, information on the dynamics of the ...
... et al., 2005) and in vitro feeding experiments (e.g. Strom et al., 2007) indicate that the potentially major grazers of phytoplankton and HNF, ciliates and dinoflagellates, are kept in check by copepod grazing (e.g. Saiz and Calbet, 2011; Smetacek, 1981) but again, information on the dynamics of the ...
This article was originally published in the Encyclopedia of Inland
... minus biomass losses, which might result from factors such as death or starvation and accounts for losses or gains resulting from immigration and emigration. The basic premise is that primary production is converted to fish tissue through a variety of trophic pathways. Although measures of fish stan ...
... minus biomass losses, which might result from factors such as death or starvation and accounts for losses or gains resulting from immigration and emigration. The basic premise is that primary production is converted to fish tissue through a variety of trophic pathways. Although measures of fish stan ...
FW: MN Nonindigenous Fish Response Plan
... ruffe population increased (Maitland et al. 1983; Maitland and East 1989; Maitland 1990). This trend has recently reversed. ...
... ruffe population increased (Maitland et al. 1983; Maitland and East 1989; Maitland 1990). This trend has recently reversed. ...
Text - University of Glasgow
... be ameliorated when the predator itself is under behavioural suppression by a higher-level predator. Given that the anti-predator response of animals is proportional to the level of predation risk (Helfman 1989), we hypothesize that any restrictions in the activity and foraging of the mesopredator s ...
... be ameliorated when the predator itself is under behavioural suppression by a higher-level predator. Given that the anti-predator response of animals is proportional to the level of predation risk (Helfman 1989), we hypothesize that any restrictions in the activity and foraging of the mesopredator s ...
Identification and Implementation of Native Fish
... (NFWF) Keystone Initiative (http://www.nfwf.org) designed to promote conservation of native fishes in the Upper Colorado River Basin under the NFCA concept. Though our goal is to identify one to four watersheds within each major subbasin in the Upper Colorado River Basin (Upper Green, Lower Green, Y ...
... (NFWF) Keystone Initiative (http://www.nfwf.org) designed to promote conservation of native fishes in the Upper Colorado River Basin under the NFCA concept. Though our goal is to identify one to four watersheds within each major subbasin in the Upper Colorado River Basin (Upper Green, Lower Green, Y ...
FROM INDIVIDUALS TO ECOSYSTEM FUNCTION: TOWARD AN O J. S
... predation risk. To support our claim, we present two kinds of empirical evidence from plantbased and detritus-based food chains of terrestrial and aquatic ecosystems. The first kind comes from experiments that explicitly trace how adaptive foraging influences ecosystem properties and functions. The se ...
... predation risk. To support our claim, we present two kinds of empirical evidence from plantbased and detritus-based food chains of terrestrial and aquatic ecosystems. The first kind comes from experiments that explicitly trace how adaptive foraging influences ecosystem properties and functions. The se ...
curriculum vitae - University of Maryland Center for Environmental
... Woodland, R.J., and D.H. Secor. 2013. Benthic-pelagic coupling in a temperate inner continental shelf fish assemblage. Limnology and Oceanography 58:966-976. [UMCES contribution No. 4734] Woodland, R.J., Magnan, P., Glémet, H., Rodríguez, M.A., and G. Cabana. 2012. Variability and directionality of ...
... Woodland, R.J., and D.H. Secor. 2013. Benthic-pelagic coupling in a temperate inner continental shelf fish assemblage. Limnology and Oceanography 58:966-976. [UMCES contribution No. 4734] Woodland, R.J., Magnan, P., Glémet, H., Rodríguez, M.A., and G. Cabana. 2012. Variability and directionality of ...
Experimental evidence for an ideal free distribution in a breeding
... of two basins with contrasting productivity was consistent with an IFD. The presence or absence of habitatspecific variation in per capita productivity can have very different consequences for population dynamics, not to mention conservation (Morris 2003). For example, given similar population size a ...
... of two basins with contrasting productivity was consistent with an IFD. The presence or absence of habitatspecific variation in per capita productivity can have very different consequences for population dynamics, not to mention conservation (Morris 2003). For example, given similar population size a ...
Assessment of Divisions 2G 3K (Shrimp Fishing Areas 4 6) Northern
... the Hopedale and Cartwright (SFA 5) channels (Fig. 1). Annual catches (Fig. 2) increased steadily from less than 2,700 t in 1977 to about 4,100 t in 1981 but subsequently declined to 1,000 t in 1983 and 1984 due to poor markets and high operating costs. Economic conditions improved thereafter, and c ...
... the Hopedale and Cartwright (SFA 5) channels (Fig. 1). Annual catches (Fig. 2) increased steadily from less than 2,700 t in 1977 to about 4,100 t in 1981 but subsequently declined to 1,000 t in 1983 and 1984 due to poor markets and high operating costs. Economic conditions improved thereafter, and c ...
THE hEAt IS ON - Defenders of Wildlife
... Polar bears are among the largest carnivores on the planet. They are classified as marine mammals because they spend more time on ice than on land. With a body built for swimming and fur and blubber to help them withstand extreme cold, they are uniquely adapted to life on the sea ice, which is a sur ...
... Polar bears are among the largest carnivores on the planet. They are classified as marine mammals because they spend more time on ice than on land. With a body built for swimming and fur and blubber to help them withstand extreme cold, they are uniquely adapted to life on the sea ice, which is a sur ...
The Community Builder: Beaver`s Role in the Ecological Community
... protection from predators, extends foraging areas and territories, and allows for food storage during winter (Baker and Hill, 2003). They construct their dens in the form of lodges made of sticks, twigs, rocks and mud in lakes, streams, and tidal river deltas. Lodges are often constructed in the pon ...
... protection from predators, extends foraging areas and territories, and allows for food storage during winter (Baker and Hill, 2003). They construct their dens in the form of lodges made of sticks, twigs, rocks and mud in lakes, streams, and tidal river deltas. Lodges are often constructed in the pon ...
Flat-tailed Tortoise (Pyxis planicauda)
... human, free-living and domestic animals. Friends engages in a variety of advocacy programs in support of these goals. Friends informs its members about animal advocacy issues as well as the organization’s progress in addressing these issues through its magazine called Act’ionLine, its website, and o ...
... human, free-living and domestic animals. Friends engages in a variety of advocacy programs in support of these goals. Friends informs its members about animal advocacy issues as well as the organization’s progress in addressing these issues through its magazine called Act’ionLine, its website, and o ...
Trophic organization and food web structure of
... Callisto & Esteves, 1998). Because trophic guilds may be defined independently from the component species, they become very useful when the functional organization of different communities are being compared, mainly when they are not composed of common species. Thus, the definition of trophic guilds ...
... Callisto & Esteves, 1998). Because trophic guilds may be defined independently from the component species, they become very useful when the functional organization of different communities are being compared, mainly when they are not composed of common species. Thus, the definition of trophic guilds ...
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.