Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia
We describe degradation impacts on biomass, structural and functional composition of riparian forests of the Mearim river, eastern periphery of Amazonia, based on 40 transects from open water to terra firme and covering 4 degradation levels. Biomass was high (306.3 Mg ha−1) in original mature forest...
| Autor principal: | Silva, Roberto Lima da |
|---|---|
| Outros Autores: | Leite, Márcio F.A., Muniz, Francisca Helena, Souza, Luis Augusto Gomes de, Moraes, Flávio Henrique Reis de, Gehring, Christoph |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Forest Ecology and Management
2020
|
| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17036 |
| id |
oai:repositorio:1-17036 |
|---|---|
| recordtype |
dspace |
| spelling |
oai:repositorio:1-17036 Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia Silva, Roberto Lima da Leite, Márcio F.A. Muniz, Francisca Helena Souza, Luis Augusto Gomes de Moraes, Flávio Henrique Reis de Gehring, Christoph Biomass Carbon Conservation Ecosystems Erosion Global Warming Kinetics Nitrogen Fixation Restoration Rivers Vegetation Biological Nitrogen Fixations Carbon Stocks Fabaceae Montrichardia Riverine Forest Structural Composition Forestry Allometry Biomass Carbon Emission Carbon Sequestration Degradation Denitrification Ecosystem Function Ecosystem Structure Functional Role Global Warming Herb Nitrogen Fixation Nutrient Availability Open Water Peripheral Region Riparian Forest Vegetation Structure Biomass Carbon Dioxide Degradation Forests Indicators Amazonia Brasil Mearim River Fabaceae Montrichardia Montrichardia Arborescens Montrichardia Linifera We describe degradation impacts on biomass, structural and functional composition of riparian forests of the Mearim river, eastern periphery of Amazonia, based on 40 transects from open water to terra firme and covering 4 degradation levels. Biomass was high (306.3 Mg ha−1) in original mature forests (MF), and 92.3% lower in strongly degraded (SD) sites. This suggests disproportionally high CO2-emissions via riparian forest degradation and calls for their preferential conservation and restoration to contain global warming. Degradation affected vegetation structure, especially plant size distribution, whereas overall plant abundance did not differ between degradation levels. ‘Aninga’ (Montrichardia arborescens and M. linifera) forms a conspicuous vegetation component in the aquatic zone, with 12.6% biomass and 58.4% abundance shares, relatively constant up to mid-level degradation but significantly lower in SD. Aninga's forefront position breaks the kinetic energy of waves and currents, making it ideal for erosion-control, we establish allometric equations for aninga biomass estimation. Erosion caused land-loss in the aquatic and semiaquatic sections of degraded sites. The biomass share of potentially N2-fixing Fabaceae was significantly higher in both aquatic (41.4%) and semiaquatic (44.8%) zones than in terra firme (6.3%). High denitrification N-losses in alternately aerobe-anaerobe zones could reduce N-availability and give N2-fixing legumes a competitive edge; we therefore recommend N2-fixing legumes for riparian forest restoration. We find low to moderate changes of vegetation indicators up to mid-level degradation, as opposed to systematically differing SD, pointing to a critical degradation threshold beyond which dysfunctionality impedes riparian ecosystem functioning. © 2017 Elsevier B.V. 2020-06-15T21:38:18Z 2020-06-15T21:38:18Z 2017 Artigo https://repositorio.inpa.gov.br/handle/1/17036 10.1016/j.foreco.2017.07.019 en Volume 402, Pags. 92-101 Restrito Forest Ecology and Management |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biomass Carbon Conservation Ecosystems Erosion Global Warming Kinetics Nitrogen Fixation Restoration Rivers Vegetation Biological Nitrogen Fixations Carbon Stocks Fabaceae Montrichardia Riverine Forest Structural Composition Forestry Allometry Biomass Carbon Emission Carbon Sequestration Degradation Denitrification Ecosystem Function Ecosystem Structure Functional Role Global Warming Herb Nitrogen Fixation Nutrient Availability Open Water Peripheral Region Riparian Forest Vegetation Structure Biomass Carbon Dioxide Degradation Forests Indicators Amazonia Brasil Mearim River Fabaceae Montrichardia Montrichardia Arborescens Montrichardia Linifera |
| spellingShingle |
Biomass Carbon Conservation Ecosystems Erosion Global Warming Kinetics Nitrogen Fixation Restoration Rivers Vegetation Biological Nitrogen Fixations Carbon Stocks Fabaceae Montrichardia Riverine Forest Structural Composition Forestry Allometry Biomass Carbon Emission Carbon Sequestration Degradation Denitrification Ecosystem Function Ecosystem Structure Functional Role Global Warming Herb Nitrogen Fixation Nutrient Availability Open Water Peripheral Region Riparian Forest Vegetation Structure Biomass Carbon Dioxide Degradation Forests Indicators Amazonia Brasil Mearim River Fabaceae Montrichardia Montrichardia Arborescens Montrichardia Linifera Silva, Roberto Lima da Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia |
| topic_facet |
Biomass Carbon Conservation Ecosystems Erosion Global Warming Kinetics Nitrogen Fixation Restoration Rivers Vegetation Biological Nitrogen Fixations Carbon Stocks Fabaceae Montrichardia Riverine Forest Structural Composition Forestry Allometry Biomass Carbon Emission Carbon Sequestration Degradation Denitrification Ecosystem Function Ecosystem Structure Functional Role Global Warming Herb Nitrogen Fixation Nutrient Availability Open Water Peripheral Region Riparian Forest Vegetation Structure Biomass Carbon Dioxide Degradation Forests Indicators Amazonia Brasil Mearim River Fabaceae Montrichardia Montrichardia Arborescens Montrichardia Linifera |
| description |
We describe degradation impacts on biomass, structural and functional composition of riparian forests of the Mearim river, eastern periphery of Amazonia, based on 40 transects from open water to terra firme and covering 4 degradation levels. Biomass was high (306.3 Mg ha−1) in original mature forests (MF), and 92.3% lower in strongly degraded (SD) sites. This suggests disproportionally high CO2-emissions via riparian forest degradation and calls for their preferential conservation and restoration to contain global warming. Degradation affected vegetation structure, especially plant size distribution, whereas overall plant abundance did not differ between degradation levels. ‘Aninga’ (Montrichardia arborescens and M. linifera) forms a conspicuous vegetation component in the aquatic zone, with 12.6% biomass and 58.4% abundance shares, relatively constant up to mid-level degradation but significantly lower in SD. Aninga's forefront position breaks the kinetic energy of waves and currents, making it ideal for erosion-control, we establish allometric equations for aninga biomass estimation. Erosion caused land-loss in the aquatic and semiaquatic sections of degraded sites. The biomass share of potentially N2-fixing Fabaceae was significantly higher in both aquatic (41.4%) and semiaquatic (44.8%) zones than in terra firme (6.3%). High denitrification N-losses in alternately aerobe-anaerobe zones could reduce N-availability and give N2-fixing legumes a competitive edge; we therefore recommend N2-fixing legumes for riparian forest restoration. We find low to moderate changes of vegetation indicators up to mid-level degradation, as opposed to systematically differing SD, pointing to a critical degradation threshold beyond which dysfunctionality impedes riparian ecosystem functioning. © 2017 Elsevier B.V. |
| format |
Artigo |
| author |
Silva, Roberto Lima da |
| author2 |
Leite, Márcio F.A. Muniz, Francisca Helena Souza, Luis Augusto Gomes de Moraes, Flávio Henrique Reis de Gehring, Christoph |
| author2Str |
Leite, Márcio F.A. Muniz, Francisca Helena Souza, Luis Augusto Gomes de Moraes, Flávio Henrique Reis de Gehring, Christoph |
| title |
Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia |
| title_short |
Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia |
| title_full |
Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia |
| title_fullStr |
Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia |
| title_full_unstemmed |
Degradation impacts on riparian forests of the lower Mearim river, eastern periphery of Amazonia |
| title_sort |
degradation impacts on riparian forests of the lower mearim river, eastern periphery of amazonia |
| publisher |
Forest Ecology and Management |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17036 |
| _version_ |
1787143927673913344 |
| score |
11.755432 |