Examination of the effects of largemouth bass (Micropterus salmoides) and bluegill (Lepomis macrochirus) on the ecosystem attributes of lake Kawahara-oike, Nagasaki, Japan

Hossain, Md. Monir; Perhar, Gurbir; Arhonditsis, George B.; Matsuishi, Takashi; Gotō, Akira; Azuma, Mitsuyoshi

doi:10.1016/j.ecoinf.2013.07.005

Cited by 12 publications

(9 citation statements)

References 85 publications

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“…A subunit of laminated sediment is present within Unit 1 between 55 and 30 cm depth of the core and is associated with elevated S elemental abundance and a small increase in halotolerant species, C. atomus (Figure 2). This increase in C. atomus is consistent with the interpretations of Ladlow et al (2019) for the subunit as a transition back to oligohaline conditions with anoxic conditions in lake bottom waters and historical documentation for brackish bottom water conditions in the lake up until desalinization via pumping and sluice gate construction in the 1970s (Hossain et al, 2013).…”

Section: Discussionsupporting

confidence: 88%

Fossil diatom assemblage changes due to paleoenvironment change, tsunami, and typhoon in southern Japan

et al. 2023

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Tracking paleoenvironmental change and past event deposits is very important to evaluate the natural hazard spatially. This paper presents how the environment changes and implies the event deposit depending on the diatom assemblage change. To investigate paleoenvironmental change and identify the difference between tsunami and typhoon deposits, we analyze diatoms from the sediments in two coastal lakes in southern Japan where flood deposits have been linked to historical typhoon and tsunami events (Lakes Kawahara and Ryuo). The sediment cores extend from B.C.E. 500 to approximately C.E. 1000 and the downcore variation in diatom assemblages indicates a series of transitions from saline to fresher conditions in both Lake Kawahara and Lake Ryuo between approximately C.E. 500 and 1700. We observe an obvious deviation in diatom assemblages in event deposits previously identified to be either of tsunami or typhoon in origin. For the most prominent event deposit preserved in Lake Ryuo by the Hoei tsunami of C.E. 1707, the deposition of marine diatoms serves as evidence of marine flooding, while the subsequent deposition of soil and freshwater diatoms indicates the mobilization of terrigenous sediment during returning seaward flows. In contrast, the most prominent event deposit in Lake Kawahara is associated with freshwater flooding by the Kamikaze typhoon of C.E. 1281 and contains very low diatom abundances and a peak of freshwater taxa, followed by a peak in diatom counts potentially due to greater biological activity induced by a resultant influx of nutrients and re‐oxygenation during the event.

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Section: Discussionsupporting

confidence: 88%

Fossil diatom assemblage changes due to paleoenvironment change, tsunami, and typhoon in southern Japan

et al. 2023

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“…This includes the construction of a seawall that now armors the beach and several jetties near the outlet of the lake. Additionally, Lake Kawahara was historically brackish but a pump was installed in 1974 to remove saltwater from the lake and a sluice gate was installed at the inlet in 1979 (Hossain et al 2013). Due to coastal fortification and modifications to Lake Kawahara, it is likely that the site is less sensitive to recording coastal flooding within sediments spanning the instrumental period (1945 CE to present); however, the sluice gate and recent pumping of the lake may provide a modern example for the transition from salt to fresh analogous to past natural closures of the barrier beach inlet.…”

Section: Site Descriptionmentioning

confidence: 99%

A fluvially derived flood deposit dating to the Kamikaze typhoons near Nagasaki, Japan

et al. 2019

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Previous studies in western Kyushu revealed prominent marine-derived flood deposits that date to the late thirteenth-century and are interpreted to be a result of two legendary typhoons linked to the failed Mongol invasions of Japan in 1274 and 1281. The regional persistence and prominence of sediments dating to these "Kamikaze" typhoon events (meaning divine wind) raise questions about the origins of these late thirteenth-century deposits. This is due in part to uncertainty in distinguishing between tsunami and storminduced deposition. To provide additional insight into the true cause of prominent late thirteenth-century flood deposits in western Kyushu, we present a detailed assessment of an additional event deposit dating to the late thirteenth-century from Lake Kawahara near Nagasaki, Japan. This particular deposit thickens landward towards the primary river flowing into Lake Kawahara and exhibits anomalously low Sr/Ti ratios that are consistent with a fluvial rather than a marine sediment source. When combined with previous flood reconstructions, results support the occurrence of an extreme, late thirteenth-century event that was associated with both intense marine-and river-derived flooding. Results therefore contribute to a growing line of evidence for the Kamikaze typhoons resulting in widespread flooding in the region, rather than the late thirteenth-century deposit being associated with a significant tsunami impact to western Kyushu.

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“…For example, in the Ruidera Lakes in Spain, Largemouth Bass consume an endangered blenny (Blennius fluviatilis) (Nicola et al 1996); and gobies (including Rhinogobius spp.) are found in the stomachs of Largemouth Bass introduced in Japan ( Azuma and Motomura 1998;Maezono and Miyashita 2003;Tsunoda et al 2010;Hossain et al 2013;Taguchi et al 2014). In the Delta, the native fish most commonly consumed by Largemouth Bass during our surveys was the demersal Prickly Sculpin.…”

Section: Native Demersal Fishmentioning

confidence: 81%

Diets of Largemouth Bass (Micropterus salmoides) in the Sacramento San Joaquin Delta

Weinersmith

Colombano

Bibian

et al. 2019

SFEWS

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Largemouth Bass (Micropterus salmoides) were introduced into the Sacramento-San Joaquin Delta (the Delta) over 100 years ago. In the last 2 decades, the abundance of centrarchids (including Largemouth Bass) in the littoral zone has increased, while some native fish and fish that were previously abundant in the pelagic zone have declined. Largemouth Bass are now one of the most abundant piscivores in the Delta. Understanding the ecology of this top predator — including a comprehensive understanding of what prey are important in Largemouth Bass diets — is important to understanding how this species may affect the Delta fish community. To address this need, we conducted electrofishing surveys of Largemouth Bass at 33 sites every 2 months from 2008 to 2010, measuring fish fork lengths and collecting stomachs contents at each site. We characterized diets using Percent Index of Relative Importance for 3,004 Largemouth Bass, with samples that spanned all seasons. Amphipods dominated the diets of Largemouth Bass ≤175 mm FL year-round, with dipterans, odonates, and copepods and cladocerans representing other important diet items. Non-native red swamp crayfish (Procambarus clarkii) were the most important prey for Largemouth Bass >175 mm FL. Non-native centrarchids (including Largemouth Bass) and amphipods were important prey items as well. Prickly Sculpin (Cottus asper) were the most frequently consumed native fish. Other native fish and pelagic fish species rarely occurred in Largemouth Bass diets, and we discuss trends in how the frequency of co-occurrence of these fishes with Largemouth Bass in the electrofishing surveys was associated with their frequency in Largemouth Bass diets. The Largemouth Bass in the Delta appear to be sustained largely on a diet of other non-natives that reside in the littoral zone.

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Examination of the effects of largemouth bass (Micropterus salmoides) and bluegill (Lepomis macrochirus) on the ecosystem attributes of lake Kawahara-oike, Nagasaki, Japan

Cited by 12 publications

References 85 publications

Fossil diatom assemblage changes due to paleoenvironment change, tsunami, and typhoon in southern Japan

Fossil diatom assemblage changes due to paleoenvironment change, tsunami, and typhoon in southern Japan

A fluvially derived flood deposit dating to the Kamikaze typhoons near Nagasaki, Japan

Diets of Largemouth Bass (Micropterus salmoides) in the Sacramento San Joaquin Delta

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