NRES 348 Quizzes with Complete Solutions
Invasive Species
-non-native (alien) to the ecosystem under consideration
and
-whose introduction causes or is likely to cause economic or environmental harm or harm to
human health (Exec Order 13)
There is a difference between species that are _________ and those that are _________.
simply exotic
invasive
What are the control measures for the problem of an invasive species?
-First and foremost, DON'T LET THEM IN
-Monitoring & mapping w/ emphasis on exchange of info and inter-agency coordination
-Restoration control (esp. w/ plants)
-Biological Control
-Education & outreach
Biological Control
-biological control has involved important of natural enemies
-to date, a few host-specific insect species have been introduced and results have been positive
Garlic Mustard Control
-requires aggressive and persistent methods
-procedures include:
,hand pulling
stem cutting (low vs. high)
application of herbicide (glyphosate)
prescribed fires (needs to be persistent)
methods differ depending on the extent of infestation
Many introductions (i.e., Coturnix quail) have failed reasons include:
-Failure to evaluate the life history and ecology of the species
-Failure to release sufficient numbers
-Domestication of released stocks
-Failure to follow up with appropriate management or prepare with proper management
Concerns about the introduction of exotics:
-Hybridization and "genetic swamping" can lead to mismatch of heritable adaptations and the
environment (common example is the ibex [Capra ibex] in Europe with subspecies)
-Interspecific competition
-Parasites
-Habitat degradation
The Endangered species Preservation Act
Listing of only native species as endangered w/ limited means of protection
The Endangered Species Conservation Act
Protection for species w/ worldwide extinction. Sale and import prohibited.
, Signing of CITES
Convention of International trade of Endangered Species
Endangered Species Act
Mission: to protect endangered and threatened species and provides a means to protect their
ecosystem
Species
any subspecies of fish or wildlife or plants, and any distinct population segment of any species of
vertebrate fish or wildlife which interbreeds when mature.
Candidate Species
-Defined differently by the U.S. Fish and Wildlife Service and the National Marine Fisheries
Service
Candidate Species (US F&W)
a species for which the Service has sufficient info on file relative to status and threats to support
issuance of a proposed listing
Candidate Species (National Marine FS)
species for which concerns remain regarding their status but for which more info is needed
before they can be proposed for listing
Take
to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage
in any such conduct." 16 U.S.C. § 1532(19). The Fish and Wildlife Service has defined "harm"
Invasive Species
-non-native (alien) to the ecosystem under consideration
and
-whose introduction causes or is likely to cause economic or environmental harm or harm to
human health (Exec Order 13)
There is a difference between species that are _________ and those that are _________.
simply exotic
invasive
What are the control measures for the problem of an invasive species?
-First and foremost, DON'T LET THEM IN
-Monitoring & mapping w/ emphasis on exchange of info and inter-agency coordination
-Restoration control (esp. w/ plants)
-Biological Control
-Education & outreach
Biological Control
-biological control has involved important of natural enemies
-to date, a few host-specific insect species have been introduced and results have been positive
Garlic Mustard Control
-requires aggressive and persistent methods
-procedures include:
,hand pulling
stem cutting (low vs. high)
application of herbicide (glyphosate)
prescribed fires (needs to be persistent)
methods differ depending on the extent of infestation
Many introductions (i.e., Coturnix quail) have failed reasons include:
-Failure to evaluate the life history and ecology of the species
-Failure to release sufficient numbers
-Domestication of released stocks
-Failure to follow up with appropriate management or prepare with proper management
Concerns about the introduction of exotics:
-Hybridization and "genetic swamping" can lead to mismatch of heritable adaptations and the
environment (common example is the ibex [Capra ibex] in Europe with subspecies)
-Interspecific competition
-Parasites
-Habitat degradation
The Endangered species Preservation Act
Listing of only native species as endangered w/ limited means of protection
The Endangered Species Conservation Act
Protection for species w/ worldwide extinction. Sale and import prohibited.
, Signing of CITES
Convention of International trade of Endangered Species
Endangered Species Act
Mission: to protect endangered and threatened species and provides a means to protect their
ecosystem
Species
any subspecies of fish or wildlife or plants, and any distinct population segment of any species of
vertebrate fish or wildlife which interbreeds when mature.
Candidate Species
-Defined differently by the U.S. Fish and Wildlife Service and the National Marine Fisheries
Service
Candidate Species (US F&W)
a species for which the Service has sufficient info on file relative to status and threats to support
issuance of a proposed listing
Candidate Species (National Marine FS)
species for which concerns remain regarding their status but for which more info is needed
before they can be proposed for listing
Take
to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage
in any such conduct." 16 U.S.C. § 1532(19). The Fish and Wildlife Service has defined "harm"
