scholarly journals First records of non-indigenous species in port of Arzew (Algeria: southwestern Mediterranean)

2020 ◽  
Author(s):  
BILEL BENSARI ◽  
LAMIA BAHBAH ◽  
ADLANE LOUNAOUCI ◽  
SEYF EDDINA FAHCI ◽  
ABDERRAHMANE BOUDA ◽  
...  
Keyword(s):  
Hot Spots ◽  
Native Species ◽  
Indigenous Species ◽  
Fishing Vessel ◽  
Fouling Communities ◽  
Southern Mediterranean ◽  
Algerian Coast ◽  
Cryptogenic Species ◽  
Non Indigenous Species ◽  
First Time

Maritime transport is considered to be one of the main factors to transfer non-indigenous species (NIS), through biofouling of ships’ hulls and ballast water. Therefore, ports and marinas constitute hot spots for the introduction of species carried by international shipping and therefore are important sites for initiating biological monitoring. In this study, the port of Arzew (Algeria, Southern Mediterranean) was surveyed for the presence of NIS and cryptogenic species. The fouling communities of floating submerged structures and the hull of a fishing vessel were sampled with a scraper blade. After fixing and separating, the organisms were identified to the lowest possible taxonomic level. The results revealed the presence of 10 NIS and cryptogenic species, including: 1 Ascidiacea, 2 Bryozoa, 3 Crustacea, 1 Mollusca 1 Porifera, and 2 Polychaeta. Five species are reported for the first time from the Algerian coast. This study contributes to the knowledge of non-native species on the Algerian coast and in the Southern Mediterranean and establishes a baseline dataset for future assessments of NIS in ports of Algeria.

scholarly journals Stationary substrates facilitate bioinvasion in Paranaguá Bay in southern Brazil

2010 ◽  
Vol 58 (spe3) ◽  
pp. 23-28 ◽  
Author(s):  
Rosana M. Rocha ◽  
Leonardo C. Cangussu ◽  
Mariana P. Braga
Keyword(s):  
Introduced Species ◽  
Artificial Substrates ◽  
Management Tool ◽  
Specific Substrate ◽  
Indigenous Species ◽  
Constant Depth ◽  
Fouling Communities ◽  
Paranaguá Bay ◽  
Non Indigenous Species ◽  
Stationary Plate

Artificial substrates in and near ports and marinas commonly have many non-indigenous species and are the first stepping stone for the establishment of bioinvasors. Substrate movement influences fouling communities and so understanding of how species assemblages are related to specific substrate conditions is crucial as a management tool. Here we describe the species assemblage of the community after six months of development on granite plates in Paranaguá Bay. Species richness was similar in the two treatments, with 12 species on floating (constant depth) plates and 15 on stationary (variable depth) plates. However, species composition differed, with the community on floating plates being dominated by the native bivalve Mytella charruana (66.1 ± 5.5% cover) and that on stationary plates dominated by the barnacles Fistulobalanus citerosum (49.8 ± 3.5% cover) and the introduced Amphibalanus reticulatus (33.9 ± 3.7% cover). Other introduced species were Garveia franciscana, on one stationary plate, and Megabalanus coccopoma also on one stationary plate and not very abundant on half of the floating plates (< 2%). Thus, stationary plates were more susceptible to introduced species that may become very abundant, suggesting that this type of substrate should be a priority in management for bioinvasion control. We also hypothesize that the native bivalve M. charruana is the dominant competitor for space on floating substrates, thereby reducing the invasiveness of that type of substrate.

scholarly journals Settlement plates as monitoring devices for non-indigenous species in marine fouling communities

2017 ◽  
Vol 8 (4) ◽  
pp. 559-566 ◽  
Author(s):  
Michelle Marraffini ◽  
Gail Ashton ◽  
Chris Brown ◽  
Andrew Chang ◽  
Greg Ruiz
Keyword(s):  
Indigenous Species ◽  
Fouling Communities ◽  
Marine Fouling ◽  
Non Indigenous Species ◽  
Monitoring Devices

scholarly journals Updated checklist of bony fishes along the Libyan coasts (Southern Mediterranean Sea)

2019 ◽  
Author(s):  
HOUSSEIN ELBARAASI ◽  
BAHRIA ELABAR ◽  
SALAMA ELAABIDI ◽  
ASMA BASHIR ◽  
OSAMA ELSILINI ◽  
...  
Keyword(s):  
Small Scale ◽  
Indigenous Species ◽  
Field Surveys ◽  
Complete Representation ◽  
Bony Fishes ◽  
Southern Mediterranean ◽  
The Mediterranean ◽  
Marine Areas ◽  
Non Indigenous Species ◽  
The Mediterranean Basin

 Here we provide an updated review of both native and non-indigenous ichthyofauna occurring in the waters of Libya, one of the largest and less studied marine areas of the Mediterranean basin. With respect to the most recent information, the list of Libyan bony fishes was updated with 104 species for a total of 304 listed taxa. Out of these species, 271 are native, 6 endemic to the Mediterranean, 22 non indigenous of Lessepsian origin and 5 range expanding taxa from Gibraltar. Information on the distribution and abundance of Lessepsian fishes along the Libyan coasts was gained through both field surveys and interviews with local small-scale fishermen, which contributed in filling large information gaps in the area. This combined approach allowed to gather a more complete representation of non indigenous species along the Libyan coasts and indicated three assessment areas, corresponding to the eastern, central and western sectors of the country, which should be considered in future monitoring programs.

Seawater warming at the northern reach for southern species: Gulf of Genoa, NW Mediterranean

2017 ◽  
Vol 98 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Carlo Nike Bianchi ◽  
Francesco Caroli ◽  
Paolo Guidetti ◽  
Carla Morri
Keyword(s):  
Mediterranean Sea ◽  
Native Species ◽  
Indigenous Species ◽  
Ligurian Sea ◽  
The North ◽  
Nw Mediterranean ◽  
The Mediterranean ◽  
Non Indigenous Species ◽  
Southern Species ◽  
North Western

Global warming is facilitating the poleward range expansion of plant and animal species. In the Mediterranean Sea, the concurrent temperature increase and abundance of (sub)tropical non-indigenous species (NIS) is leading to the so-called ‘tropicalization’ of the Mediterranean Sea, which is dramatically evident in the south-eastern sectors of the basin. At the same time, the colder north-western sectors of the basin have been said to undergo a process of ‘meridionalization’, that is the establishment of warm-water native species (WWN) previously restricted to the southern sectors. The Gulf of Genoa (Ligurian Sea) is the north-western reach for southern species of whatever origin in the Mediterranean. Recent (up to 2015) observations of NIS and WWN by diving have been collated to update previous similar inventories. In addition, the relative occurrences of both groups of southern species have been monitored by snorkelling between 2009 and 2015 in shallow rocky reefs at Genoa, and compared with the trend in air and sea surface temperatures. A total of 20 southern species (11 NIS and 9 WWN) was found. Two WWN (the zebra seabream Diplodus cervinus and the parrotfish Sparisoma cretense) and three NIS (the SW Atlantic sponge Paraleucilla magna, the Red Sea polychaete Branchiomma luctuosum, and the amphi-American and amphi-Atlantic crab Percnon gibbesi) are new records for the Ligurian Sea, whereas juveniles of the Indo-Pacific bluespotted cornetfish Fistularia commersonii have been found for the first time. While temperature has kept on increasing for the whole period, with 2014 and 2015 being the warmest years since at least 1950, the number of WWN increased linearly, that of NIS increased exponentially, contradicting the idea of meridionalization and supporting that of tropicalization even in the northern sectors of the Mediterranean basin.

scholarly journals Key Drivers for Copepod Assemblages in a Eutrophic Coastal Brackish Lake

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 363 ◽  
Author(s):  
Neila Annabi-Trabelsi ◽  
Gamal El-Shabrawy ◽  
Mohamed E. Goher ◽  
Madhavapeddi N. V. Subrahmanyam ◽  
Yousef Al-Enezi ◽  
...  
Keyword(s):  
Nile Delta ◽  
Acartia Tonsa ◽  
Copepod Species ◽  
Indigenous Species ◽  
Coastal Lake ◽  
Brackish Lake ◽  
Identification Of Species ◽  
Key Drivers ◽  
Non Indigenous Species ◽  
First Time

The copepod assemblages and abiotic parameters were investigated at 11 stations in a large coastal lake (Lake Manzalah, Nile Delta) from 2009–2010 in order to verify any impacts of eutrophication and salinity on the copepod species composition. The environmental conditions and the copepod assemblages appeared to have changed in comparison with previous studies, possibly because of increasing eutrophication and invasions of non-indigenous species (NIS). The aim of the present study was the identification of species which can be used as ecological indicators of high trophic status. Among the nine copepod species of Lake Manzalah, Acartia tonsa, Mesocyclops ogunnus, and Apocyclops panamensis were reported for the first time. Acartia tonsa, a well-known NIS for the Mediterranean, numerically dominated the copepod assemblages in some portions of the lake. The distribution of Acanthocyclops trajani and Thermocyclops consimilis was insensible to eutrophication because they can stand high levels of nutrients and hypoxia. Compared with previous reports, the copepod assemblage of Lake Manzalah was richer in species. The invasions of NIS, in addition to the heterogeneous progress of eutrophication in the lake, created an environmental mosaic with many species in total, but with single areas suitable for only a small number of them.

Climate change driven massive extirpation of native species from the Israeli Mediterranean shelf

2020 ◽  
Author(s):  
Paolo G. Albano ◽  
Jan Steger ◽  
Marija Bošnjak ◽  
Beata Dunne ◽  
Zara Guifarro ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Native Species ◽  
Large Scale ◽  
Seawater Temperature ◽  
Maximum Size ◽  
Extreme Environment ◽  
Time Range ◽  
Indigenous Species ◽  
Shallow Subtidal ◽  
Non Indigenous Species

&lt;p&gt;We quantify a large-scale extirpation of native species from the Israeli Mediterranean shelf, a region strongly affected by rapidly changing environmental conditions and the introduction of non-indigenous species, based on an extensive sampling programme of mollusks on intertidal to subtidal soft and hard substrata. We reconstruct historical species richness from shelly death assemblages, quantify the time range they cover with radiocarbon dating, and compare their richness with today&amp;#8217;s living assemblage diversity. The median native richness is 50% of the historical richness for the intertidal, but only 8% for the subtidal down to 40 m. Samples from the mesophotic zone show a much higher median of 42%, which is likely an underestimation due to sampling constraints. In contrast, non-indigenous species show assemblages matching the historical richness. Seasonality is very strong: autumn samples, after the summer heat peak, are highly impoverished in native species but enriched in non-indigenous ones. Additionally, a comparison between today&amp;#8217;s and historical native species maximum size shows that shallow subtidal native populations are mostly non-reproductive. In contrast, non-indigenous species reach reproductive size. These results suggest that a recent large-scale change in environmental conditions is strongly favoring non-indigenous species and is the main cause behind the shallow subtidal native species decline. Such an environmental factor is likely seawater temperature that plays a greater role in the shallow subtidal than in the cooler mesophotic zone, and affects subtidal species more than intertidal ones, pre-adapted to a climatically extreme environment.&lt;/p&gt;

Three non-indigenous species ofAoroides(Crustacea: Amphipoda: Aoridae) from the French Atlantic coast

2015 ◽  
Vol 96 (8) ◽  
pp. 1651-1659 ◽  
Author(s):  
Benoit Gouillieux ◽  
Nicolas Lavesque ◽  
Jean-Charles Leclerc ◽  
Vincent Le Garrec ◽  
Frédérique Viard ◽  
...  
Keyword(s):  
Zostera Marina ◽  
Atlantic Coast ◽  
Indigenous Species ◽  
Oyster Reefs ◽  
Marine Waters ◽  
Arcachon Bay ◽  
Bay Of Brest ◽  
Non Indigenous Species ◽  
First Time ◽  
Sw France

The amphipod genusAoroidesis reported for the first time in European marine waters. Specimens ofAoroides semicurvatusandAoroides curvipeswere collected in oyster reefs in Arcachon Bay between 2009 and 2014 and in Hossegor Lake in 2014 (SW France). Specimens ofAoroides longimeruswere collected in 2013 and 2014 in subtidal slipper limpet beds andZostera marinameadows in Arcachon Bay and in 2014 on floating pontoons in the Bay of Brest (W France). These species, native to Asia, may have been accidentally introduced in Arcachon Bay and Hossegor Lake with oyster transfers and in the Bay of Brest through both oyster transfers and shipping.

scholarly journals Tanaididae (Crustacea, Tanaidacea, Tanaidomorpha, Tanaidoidea) on a Floating Dock, West Beach, Adelaide, South Australia: Introduced or Indigenous?

Zootaxa ◽  
2021 ◽  
Vol 4996 (1) ◽  
pp. 83-125
Author(s):  
VALERIE K. TAIT ◽  
KATHLEEN E. CONLAN ◽  
SABINE DITTMANN
Keyword(s):  
Eastern Mediterranean ◽  
South Australia ◽  
Molecular Data ◽  
Indigenous Species ◽  
Sequence Matching ◽  
Fouling Communities ◽  
History Of ◽  
Morphological And Molecular Data ◽  
One Year ◽  
Non Indigenous Species

Floating artificial structures provide sites for fouling communities and favourable habitat for the establishment of non-indigenous species. Two species of Tanaididae dominated crustacean biota in a one year time-series sampling of macroalgae on the floating dock at the West Beach boat ramp, Adelaide, South Australia. This paper provides identifications for these two species and discusses inter- and intra-species variability considering the available body of morphological and molecular information. We have given one species a new species designation, Tanais adelaidensis n. sp. The other has a 655 nucleotide CO1 sequence matching that of Hexapleomera sasuke Tanabe & Kakui, 2019 collected in Japan, also matching a shorter CO1 sequence for a described Zeuxo Templeton, 1840 species from the Eastern Mediterranean. This work underlines the utility and need for detailed morphological and molecular data to resolve the taxonomy and biogeography of fouling and holdfast community tanaids, particularly those that have the demonstrated potential for a history of transport between geographically distant sites.  

scholarly journals Terrestrial ecosystems of the Antarctic Peninsula and their responses to climate change and anthropogenic impacts

2020 ◽  
pp. 84-97
Author(s):  
R. Bargagli ◽  
Keyword(s):  
Antarctic Peninsula ◽  
Native Species ◽  
Environmental Changes ◽  
Anthropogenic Impacts ◽  
Extreme Temperature ◽  
Terrestrial Ecosystems ◽  
Indigenous Species ◽  
Non Indigenous Species ◽  
Food Web Complexity ◽  
The Antarctic

Antarctica and the Southern Ocean are unique natural laboratories where organisms adapted to extreme environmental conditions have evolved in isolation for millions of years. These unique biotic communities on Earth are facing complex climatic and environmental changes. Terrestrial ecosystems in the Antarctic Peninsula Region (APR) have experienced the highest rate of climate warming and, being the most impacted by human activities, are facing the greatest risk of detrimental changes. This review provides an overview of the most recent findings on how biotic communities in terrestrial ecosystems of the Antarctic Peninsula Region (APR) are responding and will likely respond to further environmental changes and direct anthropogenic impacts. Knowledge gained from studies on relatively simple terrestrial ecosystems could be very useful in predicting what may happen in much more complex ecosystems in regions with less extreme temperature changes. The rapid warming of the APR has led to the retreat of glaciers, the loss of snow and permafrost and the increase of ice-free areas, with a consequent enhancement of soil-forming processes, biotic communities, and food web complexity. However, most human activity is concentrated in APR coastal ice-free areas and poses many threats to terrestrial ecosystems such as environmental pollution or disturbances to soilcommunities and wildlife. People who work or visit APR may inadvertently introduce alien organisms and/or spread native species to spatially isolated ice-free areas. The number of introduced non-indigenous species and xenobiotic compounds in the APR is likely to be greater than currently documented, and several biosecurity and monitoring activities are therefore suggested to Antarctic national scientific programs and tourism operators to minimize the risk of irreversible loss of integrity by the unique terrestrial ecosystems of APR.

scholarly journals The role of marinas in the establishment and spread of non-indigenous species in Baltic Sea fouling communities

Biofouling ◽  
2021 ◽  
pp. 1-14
Author(s):  
Okko Outinen ◽  
Riikka Puntila-Dodd ◽  
Ieva Barda ◽  
Radosław Brzana ◽  
Joanna Hegele-Drywa ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Indigenous Species ◽  
Fouling Communities ◽  
Non Indigenous Species
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