Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity
The riparian forest reduces the amount of light entering streams, which limits autochthonous primary production. The aim of this study was to evaluate temporal variation of autochthonous primary production in pristine and altered streams, with the goal of identifying indicators of change in environm...
| Autor principal: | Bleich, Monica Elisa |
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| Outros Autores: | Piedade, Maria Teresa Fernandez, Mortati, Amanda Frederico, André, Thiago |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Ecological Indicators
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17547 |
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oai:repositorio:1-17547 |
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oai:repositorio:1-17547 Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity Bleich, Monica Elisa Piedade, Maria Teresa Fernandez Mortati, Amanda Frederico André, Thiago Biomarkers Biomass Deforestation Plants (botany) Algal Biomass Aquatic Plants Environmental Integrity Herbaceous Plants Herbaceous Species Primary Producers Primary Production Temporal Variation Rivers Adaptation Aquatic Community Environmental Response Headwater Plant Community Primary Production Riparian Forest Seasonal Variation Stream Flow Water Column Biomass Forests Plants Rivers Brasil Algae The riparian forest reduces the amount of light entering streams, which limits autochthonous primary production. The aim of this study was to evaluate temporal variation of autochthonous primary production in pristine and altered streams, with the goal of identifying indicators of change in environmental integrity in the southern Brazilian Amazon. We evaluated free algal biomass in the water column, the presence of periphyton, and the richness and cover of aquatic herbaceous plants in 20 streams (10 pristine and 10 altered, i.e., with riparian deforestation) during the dry period, at the beginning of the rainy period, and at the end of the rainy period. In altered streams, we recorded the presence of macroscopic periphyton and the amount of algal biomass varied between the dry and flood seasons. Variations in hydrological periods did not contribute to changes in algal biomass in pristine streams; we did not observe the presence of macroscopic periphyton these streams. In altered streams, 23 aquatic herbaceous species were identified, versus only four in the pristine streams. Results showed that riparian deforestation contributes to increased autochthonous primary production, which is also influenced by different hydrological periods, with algae and aquatic herbaceous plants responding differently to dry and rainy periods. The responses of these primary producers confirm their role as important bioindicators of change in the environmental integrity of southern Amazonian streams. © 2015 Elsevier Ltd. All rights reserved. 2020-06-15T21:48:15Z 2020-06-15T21:48:15Z 2015 Artigo https://repositorio.inpa.gov.br/handle/1/17547 10.1016/j.ecolind.2015.01.040 en Volume 53, Pags. 154-161 Restrito Ecological Indicators |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biomarkers Biomass Deforestation Plants (botany) Algal Biomass Aquatic Plants Environmental Integrity Herbaceous Plants Herbaceous Species Primary Producers Primary Production Temporal Variation Rivers Adaptation Aquatic Community Environmental Response Headwater Plant Community Primary Production Riparian Forest Seasonal Variation Stream Flow Water Column Biomass Forests Plants Rivers Brasil Algae |
| spellingShingle |
Biomarkers Biomass Deforestation Plants (botany) Algal Biomass Aquatic Plants Environmental Integrity Herbaceous Plants Herbaceous Species Primary Producers Primary Production Temporal Variation Rivers Adaptation Aquatic Community Environmental Response Headwater Plant Community Primary Production Riparian Forest Seasonal Variation Stream Flow Water Column Biomass Forests Plants Rivers Brasil Algae Bleich, Monica Elisa Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity |
| topic_facet |
Biomarkers Biomass Deforestation Plants (botany) Algal Biomass Aquatic Plants Environmental Integrity Herbaceous Plants Herbaceous Species Primary Producers Primary Production Temporal Variation Rivers Adaptation Aquatic Community Environmental Response Headwater Plant Community Primary Production Riparian Forest Seasonal Variation Stream Flow Water Column Biomass Forests Plants Rivers Brasil Algae |
| description |
The riparian forest reduces the amount of light entering streams, which limits autochthonous primary production. The aim of this study was to evaluate temporal variation of autochthonous primary production in pristine and altered streams, with the goal of identifying indicators of change in environmental integrity in the southern Brazilian Amazon. We evaluated free algal biomass in the water column, the presence of periphyton, and the richness and cover of aquatic herbaceous plants in 20 streams (10 pristine and 10 altered, i.e., with riparian deforestation) during the dry period, at the beginning of the rainy period, and at the end of the rainy period. In altered streams, we recorded the presence of macroscopic periphyton and the amount of algal biomass varied between the dry and flood seasons. Variations in hydrological periods did not contribute to changes in algal biomass in pristine streams; we did not observe the presence of macroscopic periphyton these streams. In altered streams, 23 aquatic herbaceous species were identified, versus only four in the pristine streams. Results showed that riparian deforestation contributes to increased autochthonous primary production, which is also influenced by different hydrological periods, with algae and aquatic herbaceous plants responding differently to dry and rainy periods. The responses of these primary producers confirm their role as important bioindicators of change in the environmental integrity of southern Amazonian streams. © 2015 Elsevier Ltd. All rights reserved. |
| format |
Artigo |
| author |
Bleich, Monica Elisa |
| author2 |
Piedade, Maria Teresa Fernandez Mortati, Amanda Frederico André, Thiago |
| author2Str |
Piedade, Maria Teresa Fernandez Mortati, Amanda Frederico André, Thiago |
| title |
Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity |
| title_short |
Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity |
| title_full |
Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity |
| title_fullStr |
Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity |
| title_full_unstemmed |
Autochthonous primary production in southern Amazon headwater streams: Novel indicators of altered environmental integrity |
| title_sort |
autochthonous primary production in southern amazon headwater streams: novel indicators of altered environmental integrity |
| publisher |
Ecological Indicators |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17547 |
| _version_ |
1787144900782850048 |
| score |
11.755432 |