Climate Change and Biodiversity Effects in Turkish Seas

Climate is a dynamic process changing in both temporal and spatial scales. Climate change and global warming has been extensively accepted and commonly described as rising of the temperature. Long-term trends and changes in the series of monthly, seasonal and annual temperature of Çanakkale station (Çanakkale, Turkey) of Turkish State Meteorological Service (TSMS) were analyzed by considering temporal characteristics. Climatic data for temperature encompasses the period of between 1970 and 2012. Temperature data set has been arranged as climatological seasons that spring (March, April, May), summer (June, July, August), autumn (September, October, November), and winter (December, January, February). Non-parametric tests and Box-Jenkins method were used to determine climatic trends. Pettitt change-point analysis was applied for determining the change point of temperature dataset. Results of trend analysis revealed that there was a statistically significant increasing trend in the temperature. Mean annual temperature is predicted to increase 0.02977°C per year and it is forecasted to reach 15.9946°C in 2022. On the other hand, mean seasonal temperatures are predicted to increase 0.0121°C, 0.05877°C, 0.0350°C, and 0.0031°C per year for spring, summer, autumn, and winter, respectively. The increase in temperature trends indicates that global warming is causing to climate change. In light of the results, it is crucial to state that Çanakkale city will be affected by global warming and climate change, and also will have a warmer climate in the future.

Section: Discussionmentioning

confidence: 99%

Climatic Trends in the Temperature of Çanakkale City, Turkey

Kale¹

2017

“…The origin analysis draws attention that the most part of the species are of Atlantic originated cold-water fish species (Figure 6). It is thought that due to its high rate of cold water species, the biodiversity of the Black Sea would likely be affected by water temperature rises as a result of global climate changes in future as reported by Turan et al (2016). Figure 6.…”

Section: Resultsmentioning

confidence: 99%

Catch Composition of Bottom Trawl Fisheries in Düzce Coast, southwestern Black Sea

Öğreden¹,

Yağlıoğlu²

2017

This study was performed to identify the catch composition of Düzce coast (southwestern Black Sea) at depths of 30-110 meters by bottom trawl between September 2014 and August 2015. In the catch compositions of the Düzce coast, the abundance of the first, second and third species were Merlangius merlangus with 73.12% (1290.29 kg / km 2 ), Gobius spp. with 9.30% (164.04 kg/km 2 ) and Mullus barbatus with 9.05% (159.61 kg / km2), respectively. The other 33 species make up 8.53% of total fish biomass. When seasonal distribution was examined, the total catch of fish were 1038. 54, 2552.37, 1068.72, 5132.96 kg/km 2 , of which economic (target) fish species (Merlangius merlangus) constitute 745.72, 1726.14, 724.58, 4910.15 kg/km 2 in autumn, winter, spring and summer respectively. In this study, fishing a very high rate of discard whiting in little sizes draws the attention. Whiting constitutes 56% of discard. Single or sporadic captures were also recorded for Acipenser stellatus, Trachurus trachurus, Spicara smaris, Lophius piscatorius, Serranus hepatus and Hippocampus hippocampus. Moreover, in this study, red list status for 36 fish species belonging to 27 family in Düzce coasts were considered with the Red List published by the International Union for conservation of Nature and Natural Resources (IUCN). As a result of this comparison, it was determined that 2 species Critically Endangered (CR), 5 species Vulnerable (VU), 22 species Least Concern (LC), 4 species Not Evaluated (NE), 2 species Data Deficient (DD).

“…In the president study, A. djedaba is reported as second Indo-Paficic species in the Black Sea since the first Indo-Pacififc species Sphyraena obtusata was given by Boltachev (2009). The increase in water temperature has been considered as a main reason for the increasing entry of Indo-Pacific species in the Mediterranean Sea (Ben Rais Lasram et al, 2010;Golani, 2010;Turan et al 2016). Turan et al (2016) reported that there is an increased trend of temperature for the Black Se due to global climate change.…”

Section: Discussionmentioning

confidence: 99%

“…Turan et al (2016) reported that there is an increased trend of temperature for the Black Se due to global climate change. Turan et al (2016) also indicated that the increased trend of temperature may increase the number of Mediterranean Atlantic and lessepsian fish species in the Black Sea.…”

Section: Discussionmentioning

confidence: 99%

“…The increase in water temperature has been considered as a main reason for the increasing entry of Indo-Pacific species in the Mediterranean Sea (Ben Rais Lasram et al, 2010;Golani, 2010;Turan et al 2016). Turan et al (2016) reported that there is an increased trend of temperature for the Black Se due to global climate change. Turan et al (2016) also indicated that the increased trend of temperature may increase the number of Mediterranean Atlantic and lessepsian fish species in the Black Sea.…”

Section: Discussionmentioning

confidence: 99%

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First Indo-Pacific fish species from the Black Sea coast of Turkey: Shrimp scad Alepes djedaba (Forsskål, 1775) (Carangidae)

Turan¹,

Gürlek²,

Özeren³

et al. 2017

Self Cite

One specimen of shrimp scad Alepes djedaba (Forsskål, 1775) was caught by using fish net at a depth of 30 m on 11 October 2017 from Sinop Bay, the West Black Sea. With the present study, A. djedaba is first lessepsian fish species in the Black Sea coast of Turkey. The migration of IndoPacific species to the Black Sea indicate that climate change is getting an important issue both for marine biodiversity and fisheries in the Black Sea.