排序方式: 共有17条查询结果,搜索用时 15 毫秒
11.
Furkon Natsir Nessa Rohani Ambo-Rappe Leanne Claire Cullen-Unsworth Richard Kazimierz Frank Unsworth 《Ambio》2020,49(7):1271-1281
Invertebrate gleaning (walking) fisheries are common within intertidal seagrass meadows globally, contributing to the food supply of hundreds of millions of people, but understanding of these fisheries and their ecological drivers are extremely limited. The present study provides a unique analysis of these fisheries using a combined social and ecological approach. Catches contained 34 species and were dominated by Bivalves, Urchins and Gastropods. CPUE in all sites varied from 0.05 to 3 kg gleaner−1 hr−1, respectively, with the majority of fishers being women and children. Landings were of major significance for local food supply and livelihoods at all sites. Local ecological knowledge suggests seagrass meadows are declining in line with other regional trends. Increasing seagrass density significantly and positively correlated with CPUE of the invertebrate gleaning (r = 0.830) highlighting the importance of conserving these threatened habitats. Understanding the complexities of these fisheries, their supporting habitats and their sustainability is important for the support of sustainable coastal livelihoods. 相似文献
12.
13.
Maarten De Brauwer Jean‐Paul A. Hobbs Rohani Ambo‐Rappe Jamaluddin Jompa Euan S. Harvey Jennifer L. McIlwain 《Conservation biology》2018,32(3):706-715
As ecosystems come under increasing anthropogenic pressure, rare species face the highest risk of extinction. Paradoxically, data necessary to evaluate the conservation status of rare species are often lacking because of the challenges of detecting species with low abundance. One group of fishes subject to this undersampling bias are those with cryptic body patterns. Twenty‐one percent of cryptic fish species assessed for their extinction risk (International Union for Conservation of Nature [IUCN]) are data deficient. We developed a nondestructive method for surveying cryptically patterned marine fishes based on the presence of biofluorescence (underwater biofluorescence census, UBC). Blue LED torches were used to investigate how widespread biofluorescence was in cryptic reef fishes in the Coral Triangle region. The effectiveness of UBC to generate abundance data was tested on a data‐deficient pygmy seahorse species (Hippocampus bargibanti) and compared with data obtained from standard underwater visual census (UVC) surveys. We recorded 95 reef fish species displaying biofluorescence, 73 of which had not been previously described as biofluorescent. Of those fish with cryptic patterns, 87% were biofluorescent compared with 9% for noncryptic fishes. The probability of species displaying biofluorescence was 70.9 times greater for cryptic species than for noncryptic species. Almost twice the number of H. bargibanti was counted using the UBC compared with UVC. For 2 triplefin species (Ucla xenogrammus, Enneapterygius tutuilae), the abundance detected with UBC was triple that detected with UVC. The UBC method was effective at finding cryptic species that would otherwise be difficult to detect and thus will reduce interobserver variability inherent to UVC surveys. Biofluorescence is ubiquitous in cryptic fishes, making this method applicable across a wide range of species. Data collected using UBC could be used with multiple IUCN criteria to assess the extinction risk of cryptic species. Adopting this technique will enhance researchers’ ability to survey cryptic species and facilitate management and conservation of cryptic marine species. 相似文献
14.
Tahereh Gholami Mahdi Akbarzadeh Majid Motamedzade Rashid Heidari Moghaddam 《International journal of occupational safety and ergonomics》2016,22(2):283-290
This study examined the hypothesis that burnout syndrome mediates effects of psychosocial risk factors and intensity of musculoskeletal disorders (MSDs) among hospital nurses. The sample was composed of 415 nurses from various wards across five hospitals of Iran's Hamedan University of Medical Sciences. Data were collected through three questionnaires: job content questionnaire, Maslach burnout inventory and visual analogue scale. Results of structural equation modeling with a mediating effect showed that psychosocial risk factors were significantly related to changes in burnout, which in turn affects intensity of MSDs. 相似文献
15.
Zobeidi Tahereh Yaghoubi Jafar Yazdanpanah Masoud 《Environment, Development and Sustainability》2022,24(4):5400-5425
Environment, Development and Sustainability - Water scarcity poses a global threat to smallholder farmers and crops. Along with population growth, agricultural development, increased urbanization,... 相似文献
16.
Manafi-Dastjerdi Mohammad Ebrahimi-Nik Mohammadali Rohani Abbas Lawson Shaneka 《Environmental science and pollution research international》2022,29(14):20265-20278
Environmental Science and Pollution Research - The present study seeks to investigate the use of husbandry waste and sawdust in the construction of degradable pots as a suitable alternative to... 相似文献
17.
Jasemizad Tahereh Padhye Lokesh P. 《Environmental science and pollution research international》2022,29(32):48330-48339
Environmental Science and Pollution Research - Hexazinone, a globally applied broad-spectrum triazine herbicide, has not been mechanistically investigated previously under advanced oxidation... 相似文献