共查询到5条相似文献，搜索用时 8 毫秒
1.
《Human Dimensions of Wildlife》2012,17(3):1-10
Abstract Anglers fishing in put‐and‐take rainbow trout (Oncorhynchus mykiss) fisheries in urban lakes rated their fishing success on average less than “fair”; (rating scale “poor,”; “fair,”; “good,”; or “excellent\") even though average catch rates exceeded the 0.5 fish/hour catch rate fisheries managers often use as a target catch rate. Catching at least one trout/trip was important to 81% of the anglers, and catching a daily limit was important to 50% of the anglers. We found that informing anglers about the actual catch rate of rainbow trout in these lakes in the previous year significantly improved anglers’ fishing‐success ratings. We suggest that angler fishing‐success rating is an important element of fishery evaluation, and providing catch rate standards is necessary for realistic evaluation by anglers. 相似文献
2.
Anders Kagervall Thomas A. Heberlein Gustav Hellström Göran Ericsson 《Human Dimensions of Wildlife》2014,19(2):139-153
We used a structural model to describe social norms that identify an emerging catch-and-release norm. The norm for the entire sample of anglers showed low intensity and consensus, suggesting no general norm. However, a cluster analysis of ratings for keeping all or proportions of fish identified three clusters with different norms toward catch-and-release. The first cluster (25%) supported catch-and-release, the second (23%) was against, and the third (52%) had a mixed norm. Preferences for an individual’s own behavior serve as a personal norm motivating individual actions, and aggregate preferences provide a social standard for each cluster. This analysis helps bridge the divide between the standards and motivational approaches to norms. Those with a personal catch-and-release norm differed in age, technique, species preference, and catch-orientation attitudes. The age effect suggests a cohort influence where the norm spreads as younger anglers replace older anglers. 相似文献
3.
Daniel A. Chapman Tyler O. Gagne Kimberly L. Ovitz Lucas P. Griffin Andy J. Danylchuk Ezra M. Markowitz 《Human Dimensions of Wildlife》2018,23(4):391-398
Catch-and-release (C&R) angling is a powerful tool for reducing impacts on recreationally targeted fishes. Although C&R can be mandated in fisheries through regulation, voluntary adoption and informal management are often critical due to minimal enforcement opportunities. Anglers themselves may play a role in increasing C&R adoption through interpersonal sanctioning (i.e., self-policing). To date, little research has examined factors that predict the willingness of anglers to sanction others’ behavior. We present results from surveys (n = 49) with anglers in Argentina to explore their motivations to sanction other anglers within their stakeholder community. Anglers with the strongest intentions to sanction were younger and more open to adopting best practices, identified fishing as important to their lifestyle, and expressed high environmental concern relative to other anglers. Our findings highlight the role that recreational anglers can play in promoting best practices via interpersonal sanctioning and identify barriers that inhibit this type of action. 相似文献
4.
The preliminary results of a study of the endemic giant tortoise population of Aldabra Atoll in the Indian Ocean (Geochehne gigantea Schweigger) are briefly described. Their number would appear to have increased dramatically since the turn of the century to their present level of some 141 000 individuals. Crude estimates of mortality and reproductive rates are also given. 相似文献
5.
以不同优势种的6个草地植物群落中鹅绒委陵菜(Potentilla anserina)为材料,通过测定基株、母株、无性系3个等级的构件数量性状及生物量结构,分析鹅绒委陵菜在不同群落中的空间拓展及生物量分配差异,探讨其应对草地群落组成差异的生长策略。结果表明,1)群落组成对母株根系有极显著影响(P0.01),6个群落中母株根长和根数均显著下降(P0.05),基株的子株数及子株根长也显著降低,但子株根数未受显著影响。2)群落组成对无性系匍匐茎茎长、茎直径及间隔子长有显著影响(P0.05),群落中鹅绒委陵菜通过降低茎直径、增大间隔子长,增加基株的空间拓展能力。3)群落组成对基株纵向、横向拓展参数有显著影响(P0.05),群落中鹅绒委陵菜显著增加基株拓展面积和拓展空间,降低拓展熵和拓展效益,以游击型生长方式,觅养或逃离环境资源。4)群落组成显著降低了基株、母株、无性系生物量累积(P0.05),群落中基株生物量优先向母株分配,母株生物量优先向叶分配,群落中无性系生物量分配比虽下降,但匍匐茎分配比呈增加趋势。5)群落组成对基株生物量配置有显著影响(P0.05),多数群落中显著增大了基株根茎比、叶茎比。综上所述,鹅绒委陵菜通过形态可塑性,在6个群落中均可存活和生长,其基株拓展能力和生物量配置除受群落盖度影响外,或许还受群落物种的生物学特点和无性系子株间竞争的影响,有待深入研究。 相似文献