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Behling, Hermann; Cohen, Marcelo CL; Lara, L (2001): Pollen analysis of modern mangrove systems. PANGAEA, https://doi.org/10.1594/PANGAEA.736098, Supplement to: Behling, H et al. (2001): Studies on Holocene mangrove ecosystem dynamics of the Bragança Peninsula in north-eastern Pará, Brazil. Palaeogeography, Palaeoclimatology, Palaeoecology, 167(3-4), 225-242, https://doi.org/10.1016/S0031-0182(00)00239-X

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Abstract:
Three sediment cores from the Bragança Peninsula located in the coastal region in the north-eastern portion of Pará State have been studied by pollen analysis to reconstruct Holocene environmental changes and dynamics of the mangrove ecosystem. The cores were taken from an Avicennia forest (Bosque de Avicennia (BDA)), a salt marsh area (Campo Salgado (CS)) and a Rhizophora dominated area (Furo do Chato). Pollen traps were installed in five different areas of the peninsula to study modern pollen deposition. Nine accelerator mass spectrometry radiocarbon dates provide time control and show that sediment deposits accumulated relatively undisturbed. Mangrove vegetation started to develop at different times at the three sites: at 5120 14C yr BP at the CS site, at 2170 14C yr BP at the BDA site and at 1440 14C yr BP at the FDC site. Since mid Holocene times, the mangroves covered even the most elevated area on the peninsula, which is today a salt marsh, suggesting somewhat higher relative sea-levels. The pollen concentration in relatively undisturbed deposits seems to be an indicator for the frequency of inundation. The tidal inundation frequency decreased, probably related to lower sea-levels, during the late Holocene around 1770 14C yr BP at BDA, around 910 14C yr BP at FDC and around 750 14C yr BP at CS. The change from a mangrove ecosystem to a salt marsh on the higher elevation, around 420 14C yr BP is probably natural and not due to an anthropogenic impact. Modern pollen rain from different mangrove types show different ratios between Rhizophora and Avicennia pollen, which can be used to reconstruct past composition of the mangrove. In spite of bioturbation and especially tidal inundation, which change the local pollen deposition within the mangrove zone, past mangrove dynamics can be reconstructed. The pollen record for BDA indicates a mixed Rhizophora/Avicennia mangrove vegetation between 2170 and 1770 14C yr BP. Later Rhizophora trees became more frequent and since ca. 200 14C yr BP Avicennia dominated in the forest.
Project(s):
Mangrove Dynamics and Management (MADAM)
Coverage:
Median Latitude: -0.902083 * Median Longitude: -46.665476 * South-bound Latitude: -0.948500 * West-bound Longitude: -46.729167 * North-bound Latitude: -0.856667 * East-bound Longitude: -46.606167
Date/Time Start: 1988-11-01T00:00:00 * Date/Time End: 1999-09-01T00:00:00
Event(s):
AvicForest_BDA (Bosque de Avicennia (BDA)) * Latitude: -0.927500 * Longitude: -46.668167 * Date/Time Start: 1988-11-01T00:00:00 * Date/Time End: 1999-09-01T00:00:00 * Elevation: 2.4 m * Recovery: 6.4 m * Location: Brazil (Pará), Rio Caeté * Campaign: Holocene Mangrove Ecosystem * Method/Device: Russischer Kammerbohrer (RKB) * Comment: located on the relativery hight central southern part of the peninsula, the area seems to be little disturbed by tidal inundations
AvicForest_BDA_trap (Bosque de Avicennia (BDA)) * Latitude: -0.927500 * Longitude: -46.668167 * Date/Time Start: 1998-11-01T00:00:00 * Date/Time End: 1999-11-01T00:00:00 * Elevation: 2.4 m * Location: Brazil (Pará), Rio Caeté * Campaign: Holocene Mangrove Ecosystem * Method/Device: Trap, pollen (TRAPPOL)
BosqueDeR/A_BDR/A_trap (BDR/A_trap) * Latitude: -0.948500 * Longitude: -46.729167 * Date/Time Start: 1998-11-01T00:00:00 * Date/Time End: 1999-11-01T00:00:00 * Location: Brazil (Pará), Rio Caeté * Campaign: Holocene Mangrove Ecosystem * Method/Device: Trap, pollen (TRAPPOL)
Size:
14 datasets

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Datasets listed in this publication series

  1. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 2) Modern pollen rain at pollen trap site Bosque de Avicennia-BDA. https://doi.org/10.1594/PANGAEA.82239
  2. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 2) Modern pollen rain at pollen trap site Bosque de Rhizophora/Avicennia-BDR/A. https://doi.org/10.1594/PANGAEA.82251
  3. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 2) Modern pollen rain at pollen trap site CampoSalgado-CS. https://doi.org/10.1594/PANGAEA.82253
  4. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 2) Modern pollen rain at pollen trap site Furo do Chato-FDC. https://doi.org/10.1594/PANGAEA.82254
  5. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 2) Modern pollen rain at pollen trap site Restinga. https://doi.org/10.1594/PANGAEA.82255
  6. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 3) Pollen analysis of the Bosque de Avicennia core. https://doi.org/10.1594/PANGAEA.81334
  7. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 4) Pollen analysis of the Campo Salgado core. https://doi.org/10.1594/PANGAEA.82238
  8. Behling, H; Cohen, MCL; Lara, L (2001): (Fig. 5) Pollen analysis of the Furo do Chato core. https://doi.org/10.1594/PANGAEA.82275
  9. Behling, H; Cohen, MCL; Lara, L (2001): (Table 1) Stratigraphy from the core Bosque de Avicennia. https://doi.org/10.1594/PANGAEA.81336
  10. Behling, H; Cohen, MCL; Lara, L (2001): (Table 1) Stratigraphy from the core Campo Salgado. https://doi.org/10.1594/PANGAEA.81337
  11. Behling, H; Cohen, MCL; Lara, L (2001): (Table 1) Stratigraphy from the core Furo do Chato. https://doi.org/10.1594/PANGAEA.81338
  12. Behling, H; Cohen, MCL; Lara, L (2001): (Table 2) AMS radiocarbon dates for Bosque de Avicennia records. https://doi.org/10.1594/PANGAEA.81339
  13. Behling, H; Cohen, MCL; Lara, L (2001): (Table 2) AMS radiocarbon dates for Campo Salgado records. https://doi.org/10.1594/PANGAEA.81340
  14. Behling, H; Cohen, MCL; Lara, L (2001): (Table 2) AMS radiocarbon dates for Furo do Chato records. https://doi.org/10.1594/PANGAEA.81341