Preferencia de microhábitat y gremios tróficos de macroinvertebrados acuáticos en ríos altoandinos, Ayacucho, Perú

IF 1.2 4区 环境科学与生态学 Q4 LIMNOLOGY Limnetica Pub Date : 2022-01-15 DOI:10.23818/limn.41.01
Manuel A. Silva Poma, A. A. Huamantinco Araujo
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引用次数: 3

Abstract

Microhabitat preference and trophic guilds of aquatic macroinvertebrates in high Andean rivers, Ayacucho, Peru Studies of aquatic macroinvertebrates in high-altitude rivers in the Andes are scarce, and little is known about the trophic role that these organisms play in these ecosystems. In the present work, the microhabitat preference of the aquatic macroinvertebrate community was studied and its trophic guilds was described through the analysis of stomach contents in two high Andean rivers of Peru. Significant differences (p < 0.05) were found between abundance, richness, Pielou equity index and effective number of species between the microhabitats studied in both rivers. The highest values of wealth in both rivers were found in the medium stone microhabitat, being the most abundant and diverse the members of the Diptera order. The lowest values of richness were found in the rock microhabitat. Four food items were identified: fine particulate organic matter (MOPF), microalgae (MA), animal remains (RA) and vegetable tissue (TV), of which MOPF was the predominant one in almost all the organisms analyzed, which shows that MOPF is the main food item consumed in both rivers. Spatially, it was the detritivores and herbivores that were in great proportion in almost all the microhabitats in both high Andean rivers.
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秘鲁阿亚库乔阿尔托安第斯河水生大型无脊椎动物的微生境和营养协会偏好
关于安第斯山脉高海拔河流中水生大型无脊椎动物的研究很少,而且对这些生物在这些生态系统中所起的营养作用知之甚少。本文通过对秘鲁两条安第斯高山河流胃内容物的分析,研究了水生大型无脊椎动物群落的微生境偏好,并描述了其营养行会。两河微生境的物种丰度、丰富度、Pielou权益指数和有效物种数差异均显著(p < 0.05)。在两条河流中,中等石质微生境的财富值最高,是双翅目昆虫中最丰富和最多样化的。岩石微生境的丰富度最低。结果表明:细颗粒物(MOPF)、微藻(MA)、动物残骸(RA)和植物组织(TV) 4种食物均为主要食物,其中微藻(MA)、动物残骸(RA)和植物组织(TV)均为主要食物。从空间上看,在安第斯山脉高海拔河流的几乎所有微生境中,腐食动物和草食动物都占很大比例。
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来源期刊
Limnetica
Limnetica LIMNOLOGY-MARINE & FRESHWATER BIOLOGY
CiteScore
3.70
自引率
7.10%
发文量
26
审稿时长
>12 weeks
期刊介绍: Limnetica publishes original research articles on the ecology of inland waters. The scope of Limnetica includes the ecology of rivers, lakes, reservoirs, coastal lagoons and wetlands, as well as biogeochemistry, paleolimnology, development of new methodologies, taxonomy, biogeography and any aspect of theoretical and applied continental aquatic ecology such as management and conservation, impact assessment, ecotoxicology and pollution. Limnetica will accept for its publication scientific articles presenting advances in knowledge or technological development, as well as as papers derived from new practical approaches on the topics covered by the journal.
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