Carbon budgets of multispecies seagrass beds at Dongsha Island in the South China Sea

Huang, Yen-Hsun; Lee, Chen‐Lu; Chung, Chia-Yun; Hsiao, Shu-Chuan; Lin, Hsing‐Juh

doi:10.1016/j.marenvres.2015.03.004

Cited by 38 publications

(31 citation statements)

References 27 publications

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“…Note that these are production fluxes and not productivity rates (biomass turnover), for which we would have higher values in aquatic indicate the number of data points. 418,420 Agroeco. = Agro-ecosystem; Oc.…”

Section: Extended Data Figure 1 | Net Ecosystem Production For Differmentioning

confidence: 99%

“…Donor and Recipient refer respectively to the ecosystem from which comes and to which go the spatial flow. 191, 192, 193, 196, 197, 198, 199, 200, 201, 216, 326,345,346,347,376,418,419,420,496,497,499 Oc. = Ocean; GPP = Gross Primary Production; R = ecosystem respiration; NEP = Net Ecosystem Production; D. = Decomposition.…”

Section: Extended Data Figure 1 | Net Ecosystem Production For Differmentioning

confidence: 99%

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Worldwide cross-ecosystem carbon subsidies and their contribution to ecosystem functioning

Gounand

Little

Harvey

et al. 2018

Preprint

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Ecosystems are widely inter-connected by spatial flows of resources 1,2 , yet primarily studied in a local context. Meta-ecosystem models suggest that cross-ecosystem subsidies can play an essential role in ecosystem functioning, notably by controlling local availability of resources for biological communities 3-6 . The general contribution of these resource connections to ecosystem functioning, however, remains unclear in natural systems, due to the heterogeneity and dispersion of data across the ecological literature.Here we provide the first quantitative synthesis on spatial flows of carbon connecting ecosystems worldwide. These cross-ecosystem subsidies range over eight orders of magnitude, between 10 -3 and 10 5 gC m -2 yr -1 , and are highly diverse in their provenance.We found that spatial carbon flows and local carbon fluxes are of the same order of magnitudes in freshwater and benthic ecosystems, suggesting an underlying dependency of these systems on resources provided by connected terrestrial and pelagic ecosystems respectively. By contrast, in terrestrial systems, cross-ecosystem subsidies were two to three orders of magnitude lower than local production (grasslands and forests), indicating a weaker quantitative influence on functioning. Those subsidies may still be qualitatively important, however, as some have high nutrient content 7,8 . We also find important gaps in carbon flow quantification, notably of cross-ecosystem subsidies driven by animal movements, which likely leads to general underestimations of the magnitude and direction of cross-ecosystem linkages 9 . Overall, we demonstrate strong ecosystem couplings, suggesting that ecosystems can be vulnerable to alterations of these flows and pointing to an urgent need to re-think ecosystem functioning in a spatial perspective.

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Section: Extended Data Figure 1 | Net Ecosystem Production For Differmentioning

confidence: 99%

Section: Extended Data Figure 1 | Net Ecosystem Production For Differmentioning

confidence: 99%

Worldwide cross-ecosystem carbon subsidies and their contribution to ecosystem functioning

Gounand

Little

Harvey

et al. 2018

Preprint

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“…A recent study on the seagrass C budget at Dongsha Island in the South China Sea demonstrated that leaf production of multispecies seagrass meadows was greater than that of monospecific beds (Huang et al 2015). Surprisingly, sediment organic C storage was much less than the global median value ).…”

Section: Filling the Gapsmentioning

confidence: 97%

“…Differences in box size do not imply differences in standing C stock. Figure is recalculated fromHuang et al (2015) Key effects of global biodiversity redistribution and links to conservation practices(Gap 3)…”

mentioning

confidence: 99%

Filling the gaps in ecological studies of socioecological systems

Chen

Hsieh

Kondo

et al. 2017

Ecological Research

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Our human-dominant world can be viewed as being built up in two parts, social and ecological systems, each consisting of multi-level organizations that interact in a complex manner. However, there are knowledge gaps among those interactions. In this paper, we focus on studies filling two types of gaps in the socioecological system, some of which are case studies in the East Asia region and others are discussed in a more general context. First, we address the gaps between different levels of organizations in ecological systems, namely, (1) the importance of plant trait plasticity in bridging evolution and ecology, (2) linking primary producer diversity and the dynamics of blue carbon in coastal ecosystems in the Asia-Pacific region, and (3) research direction of climate change biology to fill the gaps across evolution, community, and ecosystem. Also included is (4) the gap between ecological monitoring programs and theories, which also addresses the potential of citizen science. Second, we illustrate the gaps between ecological and social systems through ongoing development of an ecosystem management framework, i.e., ecosystem-based disaster risk reduction. Finally, we summarize the benefits of filling the gaps for ecologists and society.

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“…Seagrasses are marine flowering plants that are widely distributed along the coastlines of tropical and temperate seas (Short, Carruthers, Dennison, & Waycott, ), and seagrass beds provide valuable ecosystem services to humankind (Cullen‐Unsworth et al, ; Jackson, Rees, Wilding, & Attrill, ), such as the stabilization of coastlines (Gacia & Duarte, ). Seagrasses are highly productive (Duarte & Chiscano, ) and can efficiently sequester large quantities of CO 2 ; they therefore serve as important carbon sinks (Fourqurean et al, ; Huang, Lee, Chung, Hsiao, & Lin, ) and influence the coastal carbon cycle (Duarte et al, ). Seagrass leaves and rhizomes provide myriad habitats for a varity of infauna and epifauna (Hori et al, ; Orth & Heck, ), and seagrass beds are consequently important nursery grounds for a plethora of marine species (Heck, Hays, & Orth, ).…”

Section: Introductionmentioning

confidence: 99%

The effects of El Niño‐Southern Oscillation events on intertidal seagrass beds over a long‐term timescale

Lin

Lee

Peng

et al. 2018

Global Change Biology

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El Niño-Southern Oscillation (ENSO) events can cause dramatic changes in marine communities. However, we know little as to how ENSO events affect tropical seagrass beds over decadal timescales. Therefore, a diverse array of seagrass (Thalassia hemprichii) habitat types were surveyed once every 3 months for 16 years (January 2001 to February 2017) in a tropical intertidal zone that is regularly affected by both ENSO events and anthropogenic nutrient enrichment. La Niña and El Niño events had distinct effects on the biomass and growth of T. hemprichii. During La Niña years, higher (a) precipitation levels and (b) seawater nitrogen concentrations led to increases in seagrass leaf productivity, canopy height, and biomass. However, the latter simultaneously stimulated the growth of periphyton on seagrass leaves; this led to decreases in seagrass cover and shoot density. More frequent La Niña events could, then, eventually lead to either a decline in intertidal seagrass beds or a shift to another, less drought-resistant seagrass species in those regions already characterized by eutrophication due to local anthropogenic activity.

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Carbon budgets of multispecies seagrass beds at Dongsha Island in the South China Sea

Cited by 38 publications

References 27 publications

Worldwide cross-ecosystem carbon subsidies and their contribution to ecosystem functioning

Worldwide cross-ecosystem carbon subsidies and their contribution to ecosystem functioning

Filling the gaps in ecological studies of socioecological systems

The effects of El Niño‐Southern Oscillation events on intertidal seagrass beds over a long‐term timescale

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