Bioinvasion and Environmental Perturbation: Synergistic Impact on Coastal–Mangrove Ecosystems of West Bengal, India

Chakraborty, Susanta Kumar

doi:10.1007/978-3-319-91382-7_6

Cited by 37 publications

(14 citation statements)

References 185 publications

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“…Apart from edaphic factors which affects soil properties, anthropogenic factors also contribute to rapid changes in soil composition and soil chemistry, For instance, oil and gas exploration lead to hydrocarbon pollution [22,20] and affects soil chemistry [23] ( Alongi, 2009). In the same vein, deforestation of mangrove trees to pave way for exploration activity [21] impact mangrove growth [24] leading to reduction in species abundance. It is thus postulated that the rapid growth of palms in mangrove forests may signify their affinity and adaptation to coastal soil.…”

Section: Introductionmentioning

confidence: 99%

An Assessment of the Physico-Chemical Parameters of Mangrove Soils that Support Nypa fruticans and Other Mangrove Species Establishment in the Cameroon Estuary

Mangwa

Fuashi

Azinwie

et al. 2021

ASRJ

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Invasion of Nypa palm into mangroves is a problem in the Cameroon Estuary. Soil variability is one of the dominant features that support Nypa palm establishment. The objective was to characterize the soil under the different mangrove stands; Purely Nypa palm stands (A), mixed stands i.e Nypa palm and other mangrove species (B) and other mangrove species i.e Nypa palm free (C), determine the principal soil characteristic critical for Nypa spread. 9 plots of 20 x 20 m were laid in each of the sites. 27 soil samples were collected in the North, West, South East and Center at a depth of 30 cm in these three sites using a soil auger. The results in the three sites indicated that; soils were acidic (3.87- 4.39), pH values did not significantly differ (alpha >0.05), organic matter was low in A (12.32%) and B (16.35%).Soil Organic Carbon ranged from (4.52 to 7.06%). High percentage of organic carbon content was recorded in C (7.06%). Low percentage of organic carbon was found in A (4.52%). Total nitrogen varied from 1.04 g/kg, 1.70g/kg, 1.80 g/kg in sites C, A and B. In all the mangrove stands, the values of Exchangeable Ca content were below 4.0 cmolkg-1. Soil texture in the three sites were; sandy, clay and silt. Power test showed no significant different in soil types between the three sites (p>0.05). According to the component matrix the factor is positively loaded by soil EC, moisture content, organic matter, organic carbon, N, C/N, CEC, Ca, Mg, K, Na, Clay, Silt, and negatively loaded by the percent sand. This study therefore, suggests that since soil plays key role in Nypa palm establishment, there should be constant monitoring of soil quality to forestall drastic changes that will jeopardize the survival of the mangroves. Nypa palm seedlings should also be physically removed from mangrove forest to prevent colonization. In addition, more mangrove seeds should be planted in deforested mangrove areas to close the window of opportunity for the palms.

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Section: Introductionmentioning

confidence: 99%

An Assessment of the Physico-Chemical Parameters of Mangrove Soils that Support Nypa fruticans and Other Mangrove Species Establishment in the Cameroon Estuary

Mangwa

Fuashi

Azinwie

et al. 2021

ASRJ

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“…In addition, this location faces stresses from the fluctuating salinity, pH, wave, tidal, current, and anthropogenic activity (Kamal et al 2016;Puryono and Suryanti 2019;Hapsari et al 2020). It leads to an understanding that mangrove sponges from the coastal zone are supposed to have a unique resilience strategy; thus, only particular genera or species can survive (Setiawan et al 2018;Chakraborty 2019).…”

Section: Introductionmentioning

confidence: 99%

Diversity of sponge-associated fungi from a mangrove forest in Kemujan Island, Karimunjawa National Park, Indonesia

et al. 2021

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Abstract. Sibero MT, Pribadi R, Larasati SJH, Calabon MS, Sabdono A, Subagiyo S, Frederick EH. 2021. Diversity of sponge-associated fungi from a mangrove forest in Kemujan Island, Karimunjawa National Park, Indonesia. Biodiversitas 22: 5695-5605. Plenty of studies have reported interesting biological properties and bioactive compounds from sponge-associated fungi in Indonesia. However, only a few studies consider their biodiversity. Most of the studies collected the sponge from the coral reef ecosystem and barely reported from the mangrove ecosystem. This study aimed to discover the biodiversity of sponge-associated fungi from a mangrove ecosystem using a DNA barcoding approach. Five mangrove-associated sponges were collected from a tidal mangrove forest in Kemujan Island, Karimunjawa National Park, Indonesia. In total, we isolated 56 sponge-associated fungi, which consisted of seven genera in the phylum Ascomycota (77.78%), one genus in the phylum Basidiomycota (11.11%), and one genus in the phylum Mucoromycota (11.11%). Trichoderma (n: 15, 26.79%), Aspergillus (n: 13, 23.21%) and Fusarium (n: 12, 21.45%) were the top three dominant genera. In addition, based on the association of fungi to its sponge hosts, Aspergillus, Aureobasidium, Fusarium, and Trichoderma are sponge-generalists; Absidia and Pestalotiopsis are sponge-associates; while Lasiodiplodia, Montagnula, and Wallemia are sponge-specialist.

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“…Bioinvasions trigger undeniable changes in ecosystem functioning of estuarine and coastal ecosystems (Carlton 1996;Chakraborty 2019). Salt marshes are no exception, with Spartina bioinvasions occurring all over the globe, leading to signi cant changes in the wetland systems, namely at the oristic biodiversity level (Daehler and Strong 1996;Zhong-Yi et al 2004;Li et al 2009;Baumel et al 2016;Duarte et al 2018b), and with consequent effects at the ecosystem services level (e.g., Human et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Bioinvasion by Spartina Patens Alters Sediment Biogeochemical Functioning European Salt Marshes

Duarte¹,

Fonseca

Patrick

et al. 2022

Preprint

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Bioinvasions pose undeniable threats and trigger changes in salt marsh ecosystem functioning. In Mediterranean and Atlantic marshes, the invasion by S. patens contributed to added competitive pressure to endemic middle-upper marsh species such as H. portulacoides. The introduction of a new and aggressive non-indigenous species (NIS) is a game-changer for the marsh biogeochemical functioning. In the present study we explored effects of this bioinvasion on an array of different extracellular enzymatic activities (EEA) of salt marsh sediments colonized by NIS and endemic plant species and its impacts on the biogeochemical functioning of a large estuarine ecosystem. In H. portulacoides there was an evident control of the extracellular enzymatic activities (EEA) by the sediment physic-chemical traits, but these relationships were weaker and fewer in number when compared to the EEA and the sediment abiotic traits in the sediments colonized by S. patens. This indicates a prevalence of a plant effect over abiotic traits in controlling EEA. Disruption in biogeochemical functioning was evident in the sediments colonized by S. patens, with clear enzymatic activity peaks during spring and summer and with significantly higher values of several EEA during autumn and winter. These led to an acceleration of necromass decomposition processes and thus to reduced marsh storage and remediation capacity. Spartina patens also showed increased phosphatase, urease, and protease activity contributing to increased release of the inorganic phosphorous and nitrogen (ammonia) into the system, with possible consequences for its eutrophication status. Higher activity of carbon-based substrates decomposition allied to an increase in dehydrogenase activity (proxy to microbial abundance and respiration), will lead to an inevitable decrease in the carbon sink capacity of the sediments and reduction of the blue carbon storage ecosystem service. The sulfatase activity in the S. patens rhizosediments also showed a significant decrease during autumn, leading to reduced production of sulfate, sulfides and increased metal bioavailability. All these changes amount to a loss of the sink capacity of the system, in terms of eutrophication reduction through organic nitrogen and phosphorous retention, carbon sink due to the acceleration of the decomposition processes and decreased metal remediation capacity. Thus, the present work highlights the need to control this invasive species not only to prevent potential reductions in floristic diversity but also to prevent the loss of key biogeochemical services, that can impact the entire estuarine system.

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Bioinvasion and Environmental Perturbation: Synergistic Impact on Coastal–Mangrove Ecosystems of West Bengal, India

Cited by 37 publications

References 185 publications

An Assessment of the Physico-Chemical Parameters of Mangrove Soils that Support Nypa fruticans and Other Mangrove Species Establishment in the Cameroon Estuary

An Assessment of the Physico-Chemical Parameters of Mangrove Soils that Support Nypa fruticans and Other Mangrove Species Establishment in the Cameroon Estuary

Diversity of sponge-associated fungi from a mangrove forest in Kemujan Island, Karimunjawa National Park, Indonesia

Bioinvasion by Spartina Patens Alters Sediment Biogeochemical Functioning European Salt Marshes

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