Biomass and carbon stock estimation of an Atlantic Forest fragment

ABSTRACT The secondary Atlantic forests play an important role in the context of climate change, acting as a carbon sink for the atmosphere. However, these forests can become a carbon source in case of increased tree mortality. Knowing this change is possible through continuous forest inventories that provide information on the dynamics of tree growth. Thus, the objective of this study was to evaluate the carbon growth dynamics of a Seasonal Semideciduous Forest fragment, with 44.11 ha, located in the Parque Tecnológico de Viçosa - MG. The forest inventories were carried out in twenty plots of 10 m x 50 m, in the years of 2010 and 2015, where all stems with dbh ≥ 5 cm were measured, botanically identified and classified in ecological groups. The stem volume was obtained through volumetric equation. Biomass and carbon stock were quantified for compartments located above the ground (stem, branches and leaves) and below ground (roots). The dynamics of carbon growth were evaluated by Gross Increment (GI) and Periodic Annual Increment in carbon of the species (PAI). The GI was 12.72 MgC ha-1, including the carbon from the stems that were recruited and died during the monitoring period. The carbon stock increased 10.01 MgC ha-1, resulting in an PAI of 2.00 MgC ha-1 year-1. Thus, it is concluded that the forest fragment present positive carbon stock growth due to successional progression, ratifying the importance of secondary forest of the Atlantic forest in the mitigation of greenhouse gases in the atmosphere.

Download Full-text

Necromass Carbon Stock in a Secondary Atlantic Forest Fragment in Brazil

Forests ◽

10.3390/f10100833 ◽

2019 ◽

Vol 10 (10) ◽

pp. 833

Author(s):

Paulo Henrique Villanova ◽

Carlos Moreira Miquelino Eleto Torres ◽

Laércio Antônio Gonçalves Jacovine ◽

Carlos Pedro Boechat Soares ◽

Liniker Fernandes da Silva ◽

...

Keyword(s):

Climate Change ◽

Atlantic Forest ◽

Carbon Stock ◽

Tree Mortality ◽

Forest Ecosystems ◽

Woody Debris ◽

Simple Random Sampling ◽

Total Carbon ◽

Forest Fragment ◽

Relevant Role

Necromass has a relevant role to play in the carbon stock of forest ecosystems, especially with the increase of tree mortality due to climate change. Despite this importance, its quantification is often neglected in tropical forests. The objective of this study was to quantify the carbon storage in a secondary Atlantic Forest fragment in Viçosa, Minas Gerais, Brazil. Coarse Woody Debris (CWD), standing dead trees (snags), and litter were quantified in twenty 10 m x 50 m plots randomly positioned throughout the forest area (simple random sampling). Data were collected during 2015, from July to December. The CWD and snags volumes were determined by the Smalian method and by allometric equations, respectively. The necromass of these components was estimated by multiplying the volume by the apparent density at each decomposition classes. The litter necromass was estimated by the proportionality method and the average of the extrapolated estimates per hectare. The carbon stock of the three components was quantified by multiplying the necromass and the carbon wood content. The total volume of dead wood, including CWD and snag, was 23.6 ± 0.9 m3 ha−1, being produced mainly by the competition for resources, senescence, and anthropic and climatic disturbances. The total necromass was 16.3 ± 0.4 Mg ha−1. The total carbon stock in necromass was 7.3 ± 0.2 MgC ha−1. The CWD, snag and litter stocked 3.0 ± 0.1, 1.8 ± 0.1, and 2.5 ± 0.1 MgC ha−1, respectively. These results demonstrate that although necromass has a lower carbon stock compared to biomass, neglecting its quantification may lead to underestimation of the carbon balance of forest ecosystems and their potential to mitigate climate change.

Download Full-text

The use of CO2 flux time series for parameter and carbon stock estimation in carbon cycle research

Global Change Biology ◽

10.1111/j.1365-2486.2011.02511.x ◽

2011 ◽

Vol 18 (1) ◽

pp. 179-193 ◽

Cited By ~ 22

Author(s):

Timothy Charles Hill ◽

Edmund Ryan ◽

Mathew Williams

Keyword(s):

Time Series ◽

Carbon Cycle ◽

Carbon Stock ◽

Co2 Flux ◽

Stock Estimation

Download Full-text

Small mammal glucocorticoid concentrations vary with forest fragment size, trap type, and mammal taxa in the Interior Atlantic Forest

Scientific Reports ◽

10.1038/s41598-021-81073-2 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Sarah A. Boyle ◽

Noé U. de la Sancha ◽

Pastor Pérez ◽

David Kabelik

Keyword(s):

Atlantic Forest ◽

Small Mammals ◽

Acute Stress ◽

Physiological Stress ◽

Fragment Size ◽

Hair Shaft ◽

Forest Fragments ◽

Forest Fragment ◽

Trapping Methods ◽

Free Ranging

AbstractSpecies that live in degraded habitats often show signs of physiological stress. Glucocorticoid hormones (e.g., corticosterone and cortisol) are often assessed as a proxy of the extent of physiological stress an animal has experienced. Our goal was to quantify glucocorticoids in free-ranging small mammals in fragments of Interior Atlantic Forest. We extracted glucocorticoids from fur samples of 106 small mammals (rodent genera Akodon and Oligoryzomys, and marsupial genera Gracilinanus and Marmosa) from six forest fragments (2–1200 ha) in the Reserva Natural Tapytá, Caazapá Department, Paraguay. To our knowledge, this is the first publication of corticosterone and cortisol levels for three of the four sampled genera (Akodon, Oligoryzomys, and Marmosa) in this forest system. We discovered three notable results. First, as predicted, glucocorticoid levels were higher in individuals living withing small forest fragments. Second, animals captured live using restraint trapping methods (Sherman traps) had higher glucocorticoid levels than those animals captured using kill traps (Victor traps), suggesting that hair glucocorticoid measures can reflect acute stress levels in addition to long-term glucocorticoid incorporation. These acute levels are likely due to urinary steroids diffusing into the hair shaft. This finding raises a concern about the use of certain trapping techniques in association with fur hormone analysis. Finally, as expected, we also detected genus-specific differences in glucocorticoid levels, as well as cortisol/corticosterone ratios.

Download Full-text

Fruit Availability and Peccary Frugivory in an Isolated Atlantic Forest Fragment: Effects on Peccary Ranging Behavior and Habitat Use

Biotropica ◽

10.1111/j.1744-7429.2007.00351.x ◽

2007 ◽

Vol 0 (0) ◽

pp. 070925063121003-??? ◽

Cited By ~ 3

Author(s):

Alexine Keuroghlian ◽

Donald P. Eaton

Keyword(s):

Habitat Use ◽

Atlantic Forest ◽

Ranging Behavior ◽

Forest Fragment ◽

Fruit Availability

Download Full-text

Atlantic Forest recovery after long-term eucalyptus plantations: The role of zoochoric and shade-tolerant tree species on carbon stock

Forest Ecology and Management ◽

10.1016/j.foreco.2021.119789 ◽

2022 ◽

Vol 503 ◽

pp. 119789

Author(s):

Alex Josélio Pires Coelho ◽

Pedro Manuel Villa ◽

Fabio Antônio Ribeiro Matos ◽

Gustavo Heringer ◽

Marcelo Leandro Bueno ◽

...

Keyword(s):

Atlantic Forest ◽

Tree Species ◽

Carbon Stock ◽

Forest Recovery ◽

Eucalyptus Plantations

Download Full-text

Feather mites (Acari, Astigmata) associated with birds in an Atlantic Forest fragment in Northeastern Brazil

Brazilian Journal of Biology ◽

10.1590/1519-6984.23313 ◽

2015 ◽

Vol 75 (3) ◽

pp. 726-735 ◽

Cited By ~ 5

Author(s):

HM Silva ◽

FA Hernandes ◽

M Pichorim

Keyword(s):

Atlantic Forest ◽

Bird Species ◽

Rio Grande ◽

Neotropical Region ◽

Species Level ◽

Northeastern Brazil ◽

Forest Fragment ◽

Visual Examination ◽

Feather Mites ◽

First Time

AbstractThe present study reports associations between feather mites (Astigmata) and birds in an Atlantic Forest fragment in Rio Grande do Norte state, in Brazil. In the laboratory, mites were collected through visual examination of freshly killed birds. Overall, 172 individuals from 38 bird species were examined, between October 2011 and July 2012. The prevalence of feather mites was 80.8%, corresponding to 139 infested individuals distributed into 30 species and 15 families of hosts. Fifteen feather mite taxa could be identified to the species level, sixteen to the genus level and three to the subfamily level, distributed into the families Analgidae, Proctophyllodidae, Psoroptoididae, Pteronyssidae, Xolalgidae, Trouessartiidae, Falculiferidae and Gabuciniidae. Hitherto unknown associations between feather mites and birds were recorded for eleven taxa identified to the species level, and nine taxa were recorded for the first time in Brazil. The number of new geographic records, as well as the hitherto unknown mite-host associations, supports the high estimates of diversity for feather mites of Brazil and show the need for research to increase knowledge of plumicole mites in the Neotropical region.

Download Full-text

Dynamics and Edge Effect of an Atlantic Forest Fragment in Brazil

Floresta e Ambiente ◽

10.1590/2179-8087.064713 ◽

2016 ◽

Vol 23 (3) ◽

pp. 340-349 ◽

Cited By ~ 1

Author(s):

Poliana Gabriella Araújo Mendes ◽

Maria Amanda Menezes Silva ◽

Tassiane Novacosque Feitosa Guerra ◽

Ana Carolina Borges Lins-e-Silva ◽

Airton de Deus Cysneiros Cavalcanti ◽

...

Keyword(s):

Species Richness ◽

Atlantic Forest ◽

Edge Effect ◽

Woody Plants ◽

Response Times ◽

Forest Edge ◽

Northeastern Brazil ◽

Forest Fragment ◽

Canopy Tree ◽

Forest Interior

ABSTRACT The woody plants in an edge area formed approximately 35 years ago in an Atlantic Forest fragment in northeastern Brazil were examined, and three environments defined: edge, intermediate, and interior. Canopy tree densities and basal areas were found to be similar in all three environments, and also similar to previous published studies in the same region; species richness was greatest at the forest edge. The understory showed greater species richness in the forest interior, but greater diversity and equitability in the intermediate environment. Understory environments close to the forest edge demonstrated larger stem diameters than in the forest interior, although at lesser densities and with smaller total basal areas. Our results indicated the existence of distinct patterns in canopy and understory that most likely reflect differences in the response times of these two vegetation layers, with the understory being more sensitive to alterations in environmental structure.

Download Full-text

Aquatic oligochaetes associated with bryophytes in an Atlantic Forest stream

Biota Neotropica ◽

10.1590/s1676-06032013000400031 ◽

2013 ◽

Vol 13 (4) ◽

pp. 371-375 ◽

Cited By ~ 1

Author(s):

Luciana Falci Theza Rodrigues ◽

Lucas Deziderio Santana ◽

Roberto da Gama Alves

Keyword(s):

Water Flow ◽

Atlantic Forest ◽

Benthic Macroinvertebrates ◽

Dry Season ◽

Forest Fragment ◽

Order Stream ◽

First Order ◽

Aquatic Oligochaetes ◽

Forest Stream ◽

Dry And Rainy Seasons

There are few reports in the literature about the colonization of benthic macroinvertebrates on bryophytes. The aim of the present study was to analyzed the oligochaetes established on bryophytes adhered to stones in a first-order stream. The collections were carried out in an Atlantic Forest fragment area during the dry and rainy seasons. We identified 15 taxa from a total of 422 oligochaetes specimens, of which the most abundant were Pristina sp.1, Enchytraeidae and Pristina jenkinae. Unlike other habitats, where the abundance of macroinvertebrates tends to be greater in the dry season, we did not find any significant differences in the abundance, richness, composition and diversity between the two periods. The results of this study indicate that bryophytes are possible areas of refuge for oligochaetes in periods of faster water flow.

Download Full-text

Food habits of snakes from the RPPN Feliciano Miguel Abdala, an Atlantic Forest fragment of southeastern Brazil

Biota Neotropica ◽

10.1590/s1676-06032009000100028 ◽

2009 ◽

Vol 9 (1) ◽

pp. 263-269 ◽

Cited By ~ 6

Author(s):

Cesar Felipe de Souza Palmuti ◽

José Cassimiro ◽

Jaime Bertoluci

Keyword(s):

Cluster Analysis ◽

Atlantic Forest ◽

Food Habits ◽

Stomach Contents ◽

Southeastern Brazil ◽

Forest Fragment ◽

Diet Preferences

We present data on the diet of 15 species of snakes belonging to a community from Reserva Particular do Patrimônio Natural Feliciano Miguel Abdala, an Atlantic Forest fragment of Southeastern Brazil, based on their stomach contents. For 12 items we were able to determine the direction of the ingestion. Most snakes ingested the prey head-first. A cluster analysis was conducted with items grouped as chilopods, mollusks, adult anurans, anuran tadpoles, lizards, amphisbaenians, snakes, and rodents. The phylogenetic influence on diet preferences is discussed.

Download Full-text