and ongoing survey effort, using a diversity of approaches, is potentially
required to rediscover presumed extinct aquatic taxa (Miller et al.,
1989). For example Marsh et al. (2003) suggested that the rediscovery
of loachminnow (Tiaroga cobitis) after some 25 years of relatively intensive
sampling must have resulted from dispersal from an adjacent
unsampled area; Hödl and Eder (1996) employed a different approach
on survey methods and timing to rediscover several species of clam
shrimp (Branchiopoda); and surveys in new areas outside the known
or expected range have also been successful (e.g. golden topminnow
(Fundulus chrysotus): Wills et al., 1998). In the current example, dip
netting proved the most effective sampling method for M. adspersa.
However, this is seldom used in surveys as it is difficult to standardise
effort, thus prompting a re-think of future survey design. Freshwater
habitats are well suited to environmental DNA approaches (Thomsen
et al., 2012), and this promises to be an additional search tool for presumed
extinct taxa.
and ongoing survey effort, using a diversity of approaches, is potentiallyrequired to rediscover presumed extinct aquatic taxa (Miller et al.,1989). For example Marsh et al. (2003) suggested that the rediscoveryof loachminnow (Tiaroga cobitis) after some 25 years of relatively intensivesampling must have resulted from dispersal from an adjacentunsampled area; Hödl and Eder (1996) employed a different approachon survey methods and timing to rediscover several species of clamshrimp (Branchiopoda); and surveys in new areas outside the knownor expected range have also been successful (e.g. golden topminnow(Fundulus chrysotus): Wills et al., 1998). In the current example, dipnetting proved the most effective sampling method for M. adspersa.However, this is seldom used in surveys as it is difficult to standardiseeffort, thus prompting a re-think of future survey design. Freshwaterhabitats are well suited to environmental DNA approaches (Thomsenet al., 2012), and this promises to be an additional search tool for presumedextinct taxa.
การแปล กรุณารอสักครู่..
