000 03223nam a22004577a 4500
999 _c136395
_d136395
003 CR-TuBCO
005 20220423181832.0
007 ta
008 141015t1992 xxu||||| |||| 00| 0 eng d
022 _a1573-2932
022 _a0049-6979
040 _aCR-TuBCO
_bspa
_cCR-TuBCO
041 _aeng
100 _9125921
_aTwilley, R.R.
_uUniversity of Southwestern Louisiana, Lafayette, USA
245 _aCarbon sinks in mangroves and their implications to carbon budget of tropical coastal ecosystems
260 _aPaíses Bajos
_bKluwer Academic Publishers
_c1992
300 _a24 páginas
_b: 10 ilustraciones, 6 tablas
504 _aBibliografía páginas 283-288
520 _aNearly 50% of terrigenous materials delivered to the world's oceans are delivered through just twenty-one major river systems. The tropical regions of the biosphere are the most biogeochemically active coastal regions and represent potentially important sinks of C in the biosphere. Rates of net primary productivity and biomass accumulation depend on a combination of global factors such as latitude and local factors such as hydrology. Global estimates of export from coastal wetlands is about 0.08 Pg C/yr compared to input of 0.36 Pg C/yr from rivers to coastal ecosystems. Total allochthonous input of 0.44 Pg C/yr is lower than in situ production of 6.65 Pg C/yr. The trophic condition of coastal ecosystems depends on the fate of this total supply of 7.09 Pg C/yr as either contributing to system respiration, or becoming permanently stored in sediments. Accumulation of carbon in coastal sediments is only 0.41 Pg C/yr; about 6% of the total input. The NEP of coastal wetlands also contribute to the C sink of coastal margins, but the source of this C is part of the terrestrial C exchange with the atmosphere. Accumulation of C in wood and sediments of coastal wetlands is 0.205 Pg C/yr, half the estimate for sequestering of C in coastal sediments. Burial of C in shelf sediments is probably underestimated, particularly in tropical river-dominated coastal margins. Better estimates of these two C sinks in the tropics, coastal wetlands and shelf sediments, is needed to better understand the contribution of coastal ecosystems to the global carbon budget.
650 _9137963
_aBIOMASA
650 _9139477
_a CARBONO
650 _9135397
_aALMACENAMIENTO
650 _9148477
_aFOTOSINTESIS
650 _9153819
_aMANGLES
650 _9136560
_aAREA COSTERA
650 _95
_aECOSISTEMA
650 _9143269
_aCURSOS DE AGUA
650 _9154288
_aMEDICION
650 _9155109
_a MODELOS
650 _9160264
_aPRODUCCION DE MADERA
650 _9145225
_aECUACIONES ALOMETRICAS
650 _9137965
_aBIOMASA AEREA
650 _9147939
_aFIJACION DE CARBONO
651 0 _928689
_aPUERTO RICO
700 _957015
_aChen, R.H.
_c (autor/a)
_uUniversity of Southwestern Louisiana, Lafayette, USA
700 _976116
_aHargis, T.
_c (autor/a)
_uUniversity of Southwestern Louisiana, Lafayette, USA
830 _aWater, Air, and Soil Pollution
_nNúmero 64 (1992)
_pAgosto
_ppáginas 265-288
856 _qpdf
_uhttps://link.springer.com/article/10.1007/BF00477106
_yeng
942 _cANA
_2ddc