Japanese Journal of Limnology最新文献_第7页

ミツトゲマダラカゲロウ（ Drunella trispina (Uéno)）（カゲロウ目，マダラカゲロウ科）幼虫の河床分布と細粒底質の関係密刺斑蝶(Drunella trispina (Ueno))(虫目，斑蝶科)幼虫河床分布与细粒底质的关系

Japanese Journal of Limnology Pub Date : 2017-09-30 DOI: 10.3739/RIKUSUI.78.231

Shigeaki Tamura, Takashi Kagaya

引用次数: 0

Sediment oxygen demand and bottom sediment environment in the northern part of the North Basin of Lake Biwa, Japan 日本琵琶湖北部流域北部沉积物需氧量与底质环境

Japanese Journal of Limnology Pub Date : 2017-03-12 DOI: 10.3739/RIKUSUI.78.169

N. Goto, Kaname Fukuda, Saori Omura, Aoi Yoshimura, S. Ban

{"title":"Sediment oxygen demand and bottom sediment environment in the northern part of the North Basin of Lake Biwa, Japan","authors":"N. Goto, Kaname Fukuda, Saori Omura, Aoi Yoshimura, S. Ban","doi":"10.3739/RIKUSUI.78.169","DOIUrl":"https://doi.org/10.3739/RIKUSUI.78.169","url":null,"abstract":"Sediment oxygen demand ( SOD ) and chemical composition of the profundal zone ( ≥ 80 m water depth ) of the northern part of the North Basin of Lake Biwa, Japan were analysed to identify the mechanism of formation of large-scale oxygen-deﬁcient waters. Sediment core samples for SOD measurements were taken from ﬁve stations ( depth of 40–95 m ) . In addition, surface sediment samples for investigation of elemental composition ( carbon, nitrogen, and phosphorus ) and origin ( autochthonous or allochthonous ) of organic matter were collected from the entire area ( 65 stations ) . The horizontal distributions of organic matter content ( g m -2 ) was almost uniform at a depth of ≥ 40 m, except for a limited zone. The percentages of organic matter ( % ) that predominantly consisted of autochthonous organic matter was higher in the profundal zone. The horizontal distribution of SOD at each measuring time was nearly uniform for all stations at a depth of ≥ 40 m, though SOD varied seasonally from 192 to 271 mgO 2 m -2 d -1 . The plausible reason for the uniform distribution of SOD at a depth of ≥ 40 m was the uniformity in organic matter composition and hypolimnion water temperature in this region. These ﬁndings suggest that oxygen dynamics in the water column above the bottom sediment greatly affects the mechanism of formation of large-scale oxygen-deﬁcient waters.","PeriodicalId":35602,"journal":{"name":"Japanese Journal of Limnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49309188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Recent decline in native bitterling populations with reference to invasion of a non-native species, Acheilognathus macropterus , in Lake Kasumigaura, Ibaraki 日本茨城Kasumigaura湖本地苦鱼种群数量的近期下降与外来物种巨翼鱼的入侵有关

Japanese Journal of Limnology Pub Date : 2016-09-26 DOI: 10.3739/RIKUSUI.78.157

Tomiji Hagiwara, T. Morosawa, Masahiro Kumaga, S. Nohara

{"title":"Recent decline in native bitterling populations with reference to invasion of a non-native species, Acheilognathus macropterus , in Lake Kasumigaura, Ibaraki","authors":"Tomiji Hagiwara, T. Morosawa, Masahiro Kumaga, S. Nohara","doi":"10.3739/RIKUSUI.78.157","DOIUrl":"https://doi.org/10.3739/RIKUSUI.78.157","url":null,"abstract":"Four bitterling species, Tanakia lanceolata, Acheilognathus typus, A. melanogaster and A. tabira erythropterus, are native to Lake Kasumigaura, Japan. Although their local extinction is a matter of concern, the reasons for recent population declines and their underlying mechanisms have been poorly understood. In this study, we conducted field research on the population dynamics of these species from 1999 to 2011, to determine the cause of the population decline. Special attention was paid to the ecological impact of non-native bitterlings and the availability of unionid mussels as their spawning hosts. During the study period, T. lanceolata and A. typus were not collected at all around the lake basin. Populations of A. tabira erythropterus and A. melanogaster gradually disappeared by the year 2010. In contrast, a non-native bitterling, A. macropterus, which newly invaded around the year 2000, showed steady increase in its population after 2005. Of the other non-native bitterlings, Rhodeus ocellatus ocellatus showed a population decline, while A. rhombeus was rarely found throughout the study period. Generalized additive mixed model (GAMM) analysis revealed that the non-native bitterling, A. macropterus, has no impact on native bitterling populations. Since there was a remarkable decrease in the abundance of unionids by 2006, the population decline of the native bitterlings can be attributed to the decreased availability of their spawning hosts. In spite of the unionid mussels absence, the non-native A. macropterus population expanded. It is likely that A. macropterus can utilize as its spawning host a cultivated freshwater pearl mussel, which is a hybrid between a Japanese Hyriopsis schlegeli and a Chinese H. cumingii, suggesting the possibility that its population is supported by pearl culture.","PeriodicalId":35602,"journal":{"name":"Japanese Journal of Limnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3739/RIKUSUI.78.157","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69926686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Further challenges in taxonomic studies of Chironomidae (Insecta, Diptera) from morphological perspective 手蛾科(昆虫亚目，双翅目)形态学分类研究的进一步挑战

Japanese Journal of Limnology Pub Date : 2016-09-05 DOI: 10.3739/RIKUSUI.78.51

Yamamoto Masaru

{"title":"Further challenges in taxonomic studies of Chironomidae (Insecta, Diptera) from morphological perspective","authors":"Yamamoto Masaru","doi":"10.3739/RIKUSUI.78.51","DOIUrl":"https://doi.org/10.3739/RIKUSUI.78.51","url":null,"abstract":"Contributions by many Japanese workers have greatly increased our knowledge of Japanese chironomid taxonomy over the last three decades. Currently, 1,206 chironomid species are recorded in Japan, but given the high diversity of natural environments, 2,000 species of chironomids are belived to be distributed in Japan. A detailed understanding of external morphological features in chironomids is one of the most important prerequisites for inferring their phylogenetic relationships. Concerning to the appendages on the gonocoxites of the hypopygia of the family Chironomidae, the term“volsellae” from Hymenoptera and named these appendages superor, inferior, and median volsellae are adopted by Sæther in 1980. Although his usage is reasonable based on the 1957 interpretation of Snodgrass, its applicability remains questionable because no distinct proof exists on whether the structures labeled as volsellae are homologous throughout the family. Instead, I recommended using terms proposed by Tokunaga in 1938 or those proposed in 1929 by Edwards for the subfamily Chironominae, as well as the neutral term accepted by Soponis in 1977 for the subfamily Orthocladiinae. Concerning the morphological terminology for the larval head, I follow Tokunaga’s interpretation in 1935.","PeriodicalId":35602,"journal":{"name":"Japanese Journal of Limnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3739/RIKUSUI.78.51","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69926908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

青森県六ヶ所村における湖沼の水質の長期変動(2004年～2015年) 青森县六所村湖沼水质的长期变动(2004年~ 2015年)

Japanese Journal of Limnology Pub Date : 2016-02-26 DOI: 10.3739/RIKUSUI.78.75

S. Ueda, H. Hasegawa, S. Hisamatsu

引用次数: 3

Seasonal changes in the composition of aquatic macroinvertebrates in an outlet stream of Lake Ô-ike, Tsugaru Jūniko Lakes, northern Japan, with special reference to adult chironomid fauna and relationships between hydropsychid trichopterans and their parasitic chironomid, Polypedilum kamotertium 日本北部Jūniko Tsugaru湖Ô-ike出水口水生大型无脊椎动物组成的季节变化，特别涉及到成年手摇虫动物群和水心理类trichopterans与其寄生手摇虫Polypedilum kamotertium的关系

Japanese Journal of Limnology Pub Date : 2016-01-29 DOI: 10.3739/RIKUSUI.77.271

A. Ohtaka, Tadashi Kobayashi

引用次数: 0

Biogeochemical characteristics of the Fujimae tidal flat sediments indicated by vertical distribution of elements, stable isotope ratios of carbon and nitrogen, and five types of phosphorus fractions 通过元素垂直分布、碳氮稳定同位素比值和5种磷组分表征的藤前潮滩沉积物生物地球化学特征

Japanese Journal of Limnology Pub Date : 2016-01-01 DOI: 10.3739/RIKUSUI.77.293

Mariko Yamamoto, N. Harada, Miyako Sato, K. Sugitani

{"title":"Biogeochemical characteristics of the Fujimae tidal flat sediments indicated by vertical distribution of elements, stable isotope ratios of carbon and nitrogen, and five types of phosphorus fractions","authors":"Mariko Yamamoto, N. Harada, Miyako Sato, K. Sugitani","doi":"10.3739/RIKUSUI.77.293","DOIUrl":"https://doi.org/10.3739/RIKUSUI.77.293","url":null,"abstract":"In order to understand the biogeochemical characteristics of urban tidal ﬂat sediments, distributions of organic and inorganic elements, carbon and nitrogen isotopic compositions, and their relationships with the ﬁve different fractions of phosphorous were analyzed for ﬁve cores of 15 cm long collected at the Fujimae Tidal Flat in the Port of ( n = 50 ) The Fujimae tidal ﬂat sediments are characterized by the enrichment in Pb and Zn, with factors of 1.72 and 1.66 relative to the upper continental crustal values respectively, implying anthropologic contamination. The sediments have a C:N mole ratio of 15.1 and a 13 C value of -25.81 ‰ on average, which are almost the same as the riverine suspended particulate matter ( SPM ) . This suggests that organic matter in the sediments is largely of terrestrial origin. The results from the fraction analyses of phosphorus show that the exchangeable or loosely adsorbed P and Fe-bound P account for about 70 % of total P at the sediment surface ( 0 - 1.5 cm ) . Such available phosphorous fractions decrease by depth and remain constant at around 38 % below 6 cm from the surface. The upper layer of the sediment is likely oxidized and it can be assumed that there is a Fe-redox boundary around 6 cm depth in the sediment. In addition to exposure to the air during the ebb, the expected predominance of terrestrial organic matter with low decomposability, which would slowly consume dissolved oxygen in bottom waters and sediment interstitial waters, could play an important role for the oxidizing condition of the upper sediment.","PeriodicalId":35602,"journal":{"name":"Japanese Journal of Limnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69925818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characteristics and recent findings of the invertebrates of inland waters in the Ryukyu Islands 琉球群岛内陆水域无脊椎动物的特征及最新发现

Japanese Journal of Limnology Pub Date : 2016-01-01 DOI: 10.3739/RIKUSUI.77.203

T. Naruse

{"title":"Characteristics and recent findings of the invertebrates of inland waters in the Ryukyu Islands","authors":"T. Naruse","doi":"10.3739/RIKUSUI.77.203","DOIUrl":"https://doi.org/10.3739/RIKUSUI.77.203","url":null,"abstract":"琉球列島の生物相は,日本の九州以北や,琉球列島と同緯度の大陸のそれとも大きく異なる。その成因は,列島がおかれた亜熱帯気候,複雑な地史,島嶼環境,近すぎず遠すぎない大陸からの距離,大きな暖流である黒潮の存在など,様々な要因に求めることができる。琉球列島の陸水環境に産する無脊椎動物を対象とした本格的な研究は,1854・1855 年に琉球列島に立ち寄った North Pacific Exploring Expedition により採集された甲殻類や軟体動物を記録した Stimpson (1858) や Gould (1859) により始められた。その後も内外の先人達により多くの研究が進められ(諸喜田・太田,2003;黒住,2003),それまでの陸水生物相に関する情報を網羅した「琉球列島の陸水生物」(西田ら編,2003)は,研究や調査を行う上での重要な情報源であり,なくてはならない重要な資料となっている。本報告は,琉球列島産陸水性無脊椎動物相について,十脚甲殻類を中心に概観するとともに,「琉球列島の陸水生物」以降の発見などについても若干紹介する。なお,本報をまとめるにあたり,久保弘文氏,佐々木健志氏,藤田喜久氏,前之園唯史氏等に,貴重なご意見を頂いた。琉球列島の陸水環境","PeriodicalId":35602,"journal":{"name":"Japanese Journal of Limnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69925170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Horizontal distribution of chironomid larvae and genetic structure of Chironomus plumosus population offshore in Lake Suwa, Central Japan 日本中部苏和湖近海毛羽手蛾幼虫水平分布及种群遗传结构

Japanese Journal of Limnology Pub Date : 2016-01-01 DOI: 10.3739/RIKUSUI.78.3

K. Hirabayashi, Y. Miyabara, T. Hanazato, N. Kondo, R. Ueno, K. Takamura

{"title":"Horizontal distribution of chironomid larvae and genetic structure of Chironomus plumosus population offshore in Lake Suwa, Central Japan","authors":"K. Hirabayashi, Y. Miyabara, T. Hanazato, N. Kondo, R. Ueno, K. Takamura","doi":"10.3739/RIKUSUI.78.3","DOIUrl":"https://doi.org/10.3739/RIKUSUI.78.3","url":null,"abstract":"In the shallow and eutrophic Lake Suwa of Central Japan, water quality has been markedly restored since the end of 1990s, and the chironomid larval community in the lake may have changed accordingly. The objectives of this study were twofold: to clarify (1) the current horizontal distribution of two chironomids, Propsilocerus akamusi and Chironomus plumosus, in Lake Suwa and (2) the genetic structure of C. plumosus in the lake. The average larval densities of P. akamusi and C. plumosus offshore in the lake were 900 and 600 individuals per m, respectively. Relative to the findings of a 2001 survey, C. plumosus larvae increased. Eight haplotypes were recognized in the cytochrome c oxidase subunit I (COI) sequences of C. plumosus larvae offshore in Lake Suwa, while more were found near the lake center. The phylogenetic tree based on the COI sequences suggests that C. plumosus specimens in Lake Suwa were of the same single lineage as those in several other Japanese lakes, while they diverged from the lineages of Russian specimens.","PeriodicalId":35602,"journal":{"name":"Japanese Journal of Limnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3739/RIKUSUI.78.3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69926761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantification of nutrient load caused by floods, as revealed by daily sampling: A case study of Hii River 洪水引起的养分负荷的定量分析:以喜溪河为例

Japanese Journal of Limnology Pub Date : 2016-01-01 DOI: 10.3739/RIKUSUI.78.97

Shogo Sugahara, Y. Tabayashi, H. Kamiya, Y. Seike

引用次数: 0