The calving of A‐68, the 5,800‐km2, 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in Ju... more The calving of A‐68, the 5,800‐km2, 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in July 2017, is one of over 10 significant ice‐shelf loss events in the past few decades resulting from rapid warming around the Antarctic Peninsula. The rapid thinning, retreat, and collapse of ice shelves along the Antarctic Peninsula are harbingers of warming effects around the entire continent. Ice shelves cover more than 1.5 million km2 and fringe 75% of Antarctica's coastline, delineating the primary connections between the Antarctic continent, the continental ice, and the Southern Ocean. Changes in Antarctic ice shelves bring dramatic and large‐scale modifications to Southern Ocean ecosystems and continental ice movements, with global‐scale implications. The thinning and rate of future ice‐shelf demise is notoriously unpredictable, but models suggest increased shelf‐melt and calving will become more common. To date, little is known about sub‐ice‐shelf ecosystems, and our understan...
Concerns about the potential effects of oil and gas exploration on Georges Bank off the coast of ... more Concerns about the potential effects of oil and gas exploration on Georges Bank off the coast of Massachusetts led to the initiation of an intensive monitoring program in July, 1981. Sponsored by the Minerals Management Service of the Department of the Interior, the program includes benthic community analysis, as well as determination of the trace metal and hydrocarbon levels in
Seventeen species of cirratulid polychaetes, 13 new to science, are reported from continental she... more Seventeen species of cirratulid polychaetes, 13 new to science, are reported from continental shelf and slope depths of the western North Atlantic Ocean. The samples were collected as part of deep-water offshore reconnaissance surveys from New England to the Carolinas and long-term monitoring programs in Boston Harbor, Massachusetts Bay, and Georges Bank off Massachusetts. The new species are included in the genera Caulleriella (C. cryptica n. sp.), Chaetocirratulus (C. hessleri n. sp., C. sandersi n. sp., and C. tomaculus n. sp.), and Chaetozone (C. adunca n. sp., C. artaspinosa n. sp., C. brychiata n. sp., C. castouria n. sp., C. donerae n. sp., C. lophia n. sp., C. novagracilis, n. sp., C. paucispinosa n. sp. and C. profunda n. sp. In addition, Chaetozone gayheadia Hartman, 1965 is redescribed based on type-material and additional collections and transferred to the genus Chaetocirratulus. Chaetozone benthaliana McIntosh, 1985 is designated a species inquirendum because it was des...
Bulletin, Southern California Academy of Sciences, 1985
A new species of Pseudeurythoe (Polychaeta: Amphinomidae) from central California by Jerry D. Kud... more A new species of Pseudeurythoe (Polychaeta: Amphinomidae) from central California by Jerry D. Kudenov and James A. Blake. Bull. Southern California Acad. Sci., 84(1):38-40, 1985. A new intertidal amphinomid polychaete of the genus Pseudeurythoe is described from the Elkhom Slough in central California. The species is compared to related congeners
Bulletin, Southern California Academy of Sciences, 1990
Two species of Protodorvillea described from California and Wash- ington have been reexamined and... more Two species of Protodorvillea described from California and Wash- ington have been reexamined and determined to belong to the genus Pettiboneia. Structures originally described as branchiae have been determined to bear internal aciculae and are actually dorsal cirri. The numerous rows of accessory denticles originally noted as specific characters are generic level characters in Pettiboneia. The two species, P. pugettensis and P. dibranchiata, are redescribed and compared with related species of Pettiboneia
Five new species and one new genus of the obscure spioniform family Uncispionidae are described t... more Five new species and one new genus of the obscure spioniform family Uncispionidae are described together with three new species of the rare and unusual spionid genus Pygospiopsis Blake, 1983. All species are from offshore habitats with most from deep-sea continental slope depths. Among the Uncispionidae are the second and third species of the genus Uncopherusa Fauchald & Hancock, 1981, collected from off Brunei in the South China Sea and off Louisiana in the Gulf of Mexico; two new species of Uncispio Green, 1982, the third and fourth to be described, from deep water off the U.S. Atlantic coast and the Gulf of Mexico; and a new species of a new genus, Rhamphispio n. gen., from off the U.S. Atlantic coast. All species of Uncispionidae are compared and a key to the known species is presented. The genus Pygospiopsis Blake, 1983, is currently known for only two species: P. dubia (Monro, 1930) from Antarctic and sub-Antarctic waters and P. occipitalis Blake, 1996, from shelf depths off s...
The calving of A‐68, the 5,800‐km2, 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in Ju... more The calving of A‐68, the 5,800‐km2, 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in July 2017, is one of over 10 significant ice‐shelf loss events in the past few decades resulting from rapid warming around the Antarctic Peninsula. The rapid thinning, retreat, and collapse of ice shelves along the Antarctic Peninsula are harbingers of warming effects around the entire continent. Ice shelves cover more than 1.5 million km2 and fringe 75% of Antarctica's coastline, delineating the primary connections between the Antarctic continent, the continental ice, and the Southern Ocean. Changes in Antarctic ice shelves bring dramatic and large‐scale modifications to Southern Ocean ecosystems and continental ice movements, with global‐scale implications. The thinning and rate of future ice‐shelf demise is notoriously unpredictable, but models suggest increased shelf‐melt and calving will become more common. To date, little is known about sub‐ice‐shelf ecosystems, and our understan...
Concerns about the potential effects of oil and gas exploration on Georges Bank off the coast of ... more Concerns about the potential effects of oil and gas exploration on Georges Bank off the coast of Massachusetts led to the initiation of an intensive monitoring program in July, 1981. Sponsored by the Minerals Management Service of the Department of the Interior, the program includes benthic community analysis, as well as determination of the trace metal and hydrocarbon levels in
Seventeen species of cirratulid polychaetes, 13 new to science, are reported from continental she... more Seventeen species of cirratulid polychaetes, 13 new to science, are reported from continental shelf and slope depths of the western North Atlantic Ocean. The samples were collected as part of deep-water offshore reconnaissance surveys from New England to the Carolinas and long-term monitoring programs in Boston Harbor, Massachusetts Bay, and Georges Bank off Massachusetts. The new species are included in the genera Caulleriella (C. cryptica n. sp.), Chaetocirratulus (C. hessleri n. sp., C. sandersi n. sp., and C. tomaculus n. sp.), and Chaetozone (C. adunca n. sp., C. artaspinosa n. sp., C. brychiata n. sp., C. castouria n. sp., C. donerae n. sp., C. lophia n. sp., C. novagracilis, n. sp., C. paucispinosa n. sp. and C. profunda n. sp. In addition, Chaetozone gayheadia Hartman, 1965 is redescribed based on type-material and additional collections and transferred to the genus Chaetocirratulus. Chaetozone benthaliana McIntosh, 1985 is designated a species inquirendum because it was des...
Bulletin, Southern California Academy of Sciences, 1985
A new species of Pseudeurythoe (Polychaeta: Amphinomidae) from central California by Jerry D. Kud... more A new species of Pseudeurythoe (Polychaeta: Amphinomidae) from central California by Jerry D. Kudenov and James A. Blake. Bull. Southern California Acad. Sci., 84(1):38-40, 1985. A new intertidal amphinomid polychaete of the genus Pseudeurythoe is described from the Elkhom Slough in central California. The species is compared to related congeners
Bulletin, Southern California Academy of Sciences, 1990
Two species of Protodorvillea described from California and Wash- ington have been reexamined and... more Two species of Protodorvillea described from California and Wash- ington have been reexamined and determined to belong to the genus Pettiboneia. Structures originally described as branchiae have been determined to bear internal aciculae and are actually dorsal cirri. The numerous rows of accessory denticles originally noted as specific characters are generic level characters in Pettiboneia. The two species, P. pugettensis and P. dibranchiata, are redescribed and compared with related species of Pettiboneia
Five new species and one new genus of the obscure spioniform family Uncispionidae are described t... more Five new species and one new genus of the obscure spioniform family Uncispionidae are described together with three new species of the rare and unusual spionid genus Pygospiopsis Blake, 1983. All species are from offshore habitats with most from deep-sea continental slope depths. Among the Uncispionidae are the second and third species of the genus Uncopherusa Fauchald & Hancock, 1981, collected from off Brunei in the South China Sea and off Louisiana in the Gulf of Mexico; two new species of Uncispio Green, 1982, the third and fourth to be described, from deep water off the U.S. Atlantic coast and the Gulf of Mexico; and a new species of a new genus, Rhamphispio n. gen., from off the U.S. Atlantic coast. All species of Uncispionidae are compared and a key to the known species is presented. The genus Pygospiopsis Blake, 1983, is currently known for only two species: P. dubia (Monro, 1930) from Antarctic and sub-Antarctic waters and P. occipitalis Blake, 1996, from shelf depths off s...
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Papers by James Blake