Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects

نویسندگان

چکیده

The effects of anthropogenic disturbance on multiple facets biodiversity are poorly understood. In this study, we worked with the hypothesis that disturbances affect relationship between environmental heterogeneity (EH) and biodiversity. We used a model selection approach to test three predictions. P1: greater level disturbance, weaker will be EH both taxonomic functional alpha diversities. P2: sign strength correlations metrics diversities depend disturbance. P3: Taxonomic beta not respond gradient. sampled 76 stream sites in Brazilian Neotropical savanna collected insect orders Ephemeroptera, Plecoptera Trichoptera measure For P1, did find trend decreasing increasing Results confirmed P2. Spatial flow diversity was positively correlated least-disturbed sites. Bankfull height variation negatively moderately-disturbed Thalweg depth most-disturbed partially P3 because conclude biodiversity-EH is same at all levels finding has implications for biomonitoring ecosystem management.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

on translation of phatic communion and socio-cultural relationships between the characters of the novels

phatic communion is a cultural concept which differs across cultures. according to hofstede (2001), the u.s. tends to have individualistic culture; however, asian countries tend to have collectivistic cultures. these cultures view phatic communion differently. in individualistic cultures like u.s., phatic communion reflects speakers’ socio-cultural relationships in conversations. to see whether...

15 صفحه اول

heterogeneity within the orientalist discourse: representation of the orient in womens travelogues and mens paintings

from 1950s onward, new theories and critical approaches burgeoned across humanities. these theories were context-oriented; as a result, the analysis of discursive practices gained significance. thus, social, political, historical and cultural discourses that have been hitherto marginalized and considered inferior to literary texts, were introduced as important texts to be analyzed by critics. o...

Environmental stressors alter relationships between physiology and behaviour.

Although correlations have frequently been observed between specific physiological and behavioural traits across a range of animal taxa, the nature of these associations has been shown to vary. Here we argue that a major source of this inconsistency is the influence of environmental stressors, which seem capable of revealing, masking, or modulating covariation in physiological and behavioural t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Ecological Indicators

سال: 2021

ISSN: ['1470-160X', '1872-7034']

DOI: https://doi.org/10.1016/j.ecolind.2020.107079