当前位置: X-MOL 学术Fish Fish. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Hazards of managing disparate species as a pooled complex: A general problem illustrated by two contrasting examples from Hawaii
Fish and Fisheries ( IF 6.7 ) Pub Date : 2019-08-26 , DOI: 10.1111/faf.12404
Edward E. DeMartini 1
Affiliation  

Surprisingly little published information exists on the pros and cons of managing extracted resources that are pooled as compound taxa such as species complexes. Current fisheries management includes many species complexes; in Hawaii, this includes two taxa of species pooled at subfamily and higher levels. These include seven species of parrotfishes (Scarinae, Labridae) and a seven‐species ‘bottomfish’ complex (the ‘Deep‐7’: comprising six species of snappers [Etelinae, Lutjanidae] and a single species of grouper [Epinephelidae]). Recent research on key vital rates (growth, reproduction) for major species in both taxa indicates that these complexes consist of species with disparate life histories. Species in the parrotfish taxon exhibit fast to very fast growth and short to moderate longevities, whilst Deep‐7 bottomfishes exhibit moderate to very slow growth and long to very long lifespans. These data clearly indicate that, although pooling species is a tempting default option in data‐poor situations, it is at best a necessary evil to be avoided when sufficient data on the demographics of component species become available. Pooling species is especially problematic when the ecosystem effects of extracting functionally dominant species should be an important management consideration in addition to that of species demographics. Assessments that recognize and quantify the ecosystem importance of habitat engineers and other ecological dominants could substantively improve management of species complexes. Ultimately, complexes of resource species need to be evaluated and managed based on many, sometimes conflicting and sometimes reinforcing, but always careful considerations such as those contrasted herein between the parrotfishes and bottomfishes of Hawaii.

中文翻译:

将不同物种作为一个集合体进行管理的危害:一个来自夏威夷的两个对比示例说明了一个普遍的问题

令人惊讶的是,很少有公开信息介绍管理作为复合类群(例如物种复合体)汇集的提取资源的利弊。当前的渔业管理包括许多物种综合体;在夏威夷,这包括在亚科和更高级别合并的两个物种分类单元。其中包括七种鹦嘴鱼(Scarinae,Labridae)和七种“底层鱼”复合体(“ Deep-7”:包括六种鲷鱼[Etelinae,Lutjanidae]和单一种类的石斑鱼[Epinephelidae])。最近对两个分类中主要物种的关键生命率(生长,繁殖)的研究表明,这些复合体由具有不同生活史的物种组成。鹦嘴鱼分类群中的物种表现出快速到非常快的生长,寿命短到中等,而Deep-7海底鱼类的生长速度中等到非常慢,寿命也很长。这些数据清楚地表明,尽管在缺乏数据的情况下合并物种是一个诱人的默认选项,但是,当可以获得有关组成物种的人口统计学的足够数据时,最好避免这种必要的弊端。当提取功能上占优势的物种的生态系统影响除物种人口统计信息外还应作为重要的管理考虑因素时,合并物种尤其成问题。评估能够识别和量化栖息地工程师和其他生态优势者在生态系统中的重要性,可以从实质上改善对物种复合体的管理。最终,资源物种的综合体需要基于许多(有时是冲突的,有时是增强的)评估和管理,
更新日期:2019-08-26
down
wechat
bug