Dominance by Spartina densiflora slows salt marsh litter decomposition

2020 ◽  
Vol 31 (6) ◽  
pp. 1181-1191
Author(s):  
Pedro Daleo ◽  
Diana I. Montemayor ◽  
Eugenia Fanjul ◽  
Juan Alberti ◽  
Carlos Martín Bruschetti ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Litter Decomposition ◽  
Spartina Densiflora

Epibiosis on eggs and brooding care in the burrowing crab Chasmagnathus granulatus (Brachyura:Varunidae): comparison between mudflats and salt marshes

2007 ◽  
Vol 87 (4) ◽  
pp. 893-901 ◽  
Author(s):  
Paola V. Silva ◽  
Tomás A. Luppi ◽  
Eduardo D. Spivak
Keyword(s):  
Salt Marsh ◽  
Filamentous Fungi ◽  
Salt Marshes ◽  
Maternal Care ◽  
Spartina Densiflora ◽  
Incubation Chamber ◽  
Stage Of Development ◽  
Key Species ◽  
Burrowing Crab ◽  
Chasmagnathus Granulatus

Chasmagnathus granulatus is a semiterrestrial intertidal burrowing crab that inhabits both the unvegetated mudflats and the cordgrass (Spartina densiflora) salt marshes in Mar Chiquita Lagoon (Argentina), where it is considered the ecologically key species. The mass of C. granulatus eggs incubated by females is colonized by epibiotic micro-organisms and accumulates detritus. The type of epibionts that use eggs as a substrate, the infestation degree, the maternal care behaviour and the protection of the incubation chamber were compared between females living on mudflats and on Spartina-dominated areas. In both places, the epibiosis by bacteria and filamentous fungi and peritrichid colonial ciliate was significantly higher in the periphery than in the centre of the brood mass. The accumulation of detritus was higher in the periphery in mudflat females but not in salt marsh females. Moreover, the level of detritus was significantly higher in mudflat than in salt marsh females only in the periphery of the brood. The infestation level of bacteria and fungi, and peritrichids, increased throughout the embryonic development only in mudflat females. The periphery of the brood mass was significantly more contaminated in mudflat than in marsh females, while the central region of the brood mass did not differ between habitats. The pleopods were significantly more contaminated by bacteria and filamentous fungi and peritrichid colonial ciliates in premoult females than in postmoult females, independently from the collection site. The percentage of females with abnormal embryos was significantly higher in mudflats (26.7%) than in marshes (12.3%). Females with late embryos spent more time flapping the abdomen and probing the embryos with the chela. Non-ovigerous females did not perform specific maternal care activities. The volume of brood mass both in early or late stage of development is greater than that of the incubation chamber and, consequently, peripheral embryos are more exposed.

Tidal Suppression Negatively Affects Soil Properties and Productivity of Spartina densiflora Salt Marsh

2015 ◽  
Vol 68 (3) ◽  
pp. 276-284 ◽  
Author(s):  
Elizabeth J. Jacobo ◽  
Adriana M. Rodriguez ◽  
Clara M. Fariña ◽  
Yanina Paggi
Keyword(s):  
Salt Marsh ◽  
Soil Properties ◽  
Spartina Densiflora

Trace metal concentrations in Spartina densiflora and associated soil from a Patagonian salt marsh

2014 ◽  
Vol 89 (1-2) ◽  
pp. 444-450 ◽  
Author(s):  
Yanina L. Idaszkin ◽  
Pablo J. Bouza ◽  
Carmen H. Marinho ◽  
Mónica N. Gil
Keyword(s):  
Salt Marsh ◽  
Trace Metal ◽  
Spartina Densiflora ◽  
Metal Concentrations

Saline tidal flooding effects on Spartina densiflora plants from different positions of the salt marsh. Diversities and similarities on growth, anatomical and physiological responses

2014 ◽  
Vol 102 ◽  
pp. 27-36 ◽  
Author(s):  
Carla E. Di Bella ◽  
Gustavo G. Striker ◽  
Francisco J. Escaray ◽  
Fernando A. Lattanzi ◽  
Adriana M. Rodríguez ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Physiological Responses ◽  
Spartina Densiflora ◽  
Tidal Flooding

scholarly journals Dataset on the isotopic (ẟ13C, ẟ15N) and elemental (C, N) composition of estuarine primary producers in the subtropical Southwestern Atlantic coast

2021 ◽  
Vol 1 (1) ◽  
pp. 8-15
Author(s):  
Marianna Lanari ◽  
Bianca Possamai ◽  
Margareth Copertino ◽  
Alexandre Miranda Garcia
Keyword(s):  
Organic Matter ◽  
Salt Marsh ◽  
Atlantic Coast ◽  
Austral Summer ◽  
Ruppia Maritima ◽  
Temporal Data ◽  
Primary Producers ◽  
Spartina Densiflora ◽  
Salt Marsh Plants ◽  
Subtropical Estuary

Benthic and pelagic primary producers had their isotopic (ẟ13C, ẟ15N) and elemental (C, N) composition monitored in the Patos Lagoons estuary, in southern Brazil. The present dataset comprises temporal data obtained through seasonal samplings of C3 (Scirpus spp.) and C4 (Spartina densiflora) salt marsh plants, ephemerous bloom-forming drift macroalgae (Ulvophyceae), the widgeon grass Ruppia maritima, particulate (POM) and sedimentary (SOM) organic matter in shallow waters (< 2m) of a subtropical estuary from austral summer 2010 to autumn 2016. POM and SOM were collected as proxies of phytoplankton and microphytobenthos, respectively. Salt marsh plants were randomly sampled (N = 126) at a regularly flooded low marsh area, whereas submerged drift macroalgae (N = 29) and Ruppia plants (N = 14) were collected in adjacent mudflats. POM was collected (N = 33) by filtering water samples using glass fiber filter. SOM was obtained (N = 35) by removing superficial sediment. In laboratory, samples were processed and further analyzed for total organic carbon (TOC), total nitrogen (TN) and carbon (13C/12C) and nitrogen (15N/14N) stable isotopes ratios. With a total of 237 samples analyzed, this dataset provides key information on the isotopic and elemental composition of distinct estuarine primary producers and sources of particulate organic matter (POM and SOM) and their temporal variability in a highly variable aquatic environment. Such knowledge may add to ecological studies investigating food webs, biogeochemical cycles and sources tracking in coastal systems.

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