Least Tern (Sternula antillarum)

Thompson, Bruce C.; Jackson, Jerome A.; Burger, Joanna; Hill, Laura A.; Kirsch, Eileen M.; Atwood, Jonathan L.

doi:10.2173/bna.290

Cited by 34 publications

(66 citation statements)

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“…Combining all of these estimates, the minimum number of adult Least Terns present during the breeding season in the United States is somewhere between 84,839 and 86,591. This is considerably higher than the most recent estimate of at least 55,000 Least Terns breeding in the U.S. (Thompson et al 1997). The discrepancy between these numbers likely reflects the better survey coverage of the data reported in this document, not an actual population increase.…”

Section: Distribution and Abundance Of Interior Least Tern Breeding Pcontrasting

confidence: 60%

“…The primary objectives of this survey were (1) to estimate the number of adult ILT occurring in North America during the breeding season, (2) to document the range-wide distribution of nesting colonies, and (3) to describe the types of habitats that are being used for nesting. Surveys were scheduled to take place within a narrow two-week survey window in late June and early July (20 June to 3 July) that was chosen to coincide with peak nesting activity at as many sites as possible across the large breeding range of ILT (Thompson et al 1997). An additional week was added to this window (4 July to 10 July) to complete surveys that were delayed by high water, bad weather, or other logistical problems.…”

Section: Range-wide Survey Methodsmentioning

confidence: 99%

“…Fish and Wildlife Service (USFWS) list of threatened and endangered species in 1985 because of suspected low numbers and concerns about breeding season habitat loss or degradation, primarily on large rivers such as the Missouri, Platte, Mississippi, Arkansas, Cimarron, Canadian, and Red (USFWS 1985). Currently, five different subspecies of the Least Tern are recognized in North America, including the Interior Least Tern (Sternula antillarum athalassos) (Thompson et al 1997). Arguments have been made both for and against the validity of this taxonomic designation without reaching consensus (Thompson et al 1992, Johnson et al 1998.…”

Section: Background and Problem Statementmentioning

confidence: 99%

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Distribution and Abundance of the Interior Population of the Least Tern (Sternula Antillarum), 2005; A Review of the First Complete Range-Wide Survey in the Context of Historic and Ongoing Monitoring Efforts

Lott¹

2006

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Abstract:The interior population of the Least Tern (Sternula antillarum) was added to the U.S. Fish and Wildlife Service (USFWS) list of threatened and endangered species in 1985 because of suspected low numbers and concerns about breeding season habitat loss or degradation on large interior rivers. Range-wide survey data were incomplete when Interior Least Terns (ILT) were originally listed. Although many ILT counts have been conducted over the past 20 years, regular survey coverage is still incomplete across the large breeding range of ILT, limiting the ability to assess the conservation status or trends for this population. During the last two weeks of June and the first week of July 2005, over 140 participants contributed to the first complete range-wide survey for ILT (see acknowledgments). The primary objectives of this survey were 1) to provide a minimum count of the number of adult ILT occurring in North America during the breeding season, 2) to document the range-wide distribution of nesting colonies, and 3) to describe the types of habitats that are being used for nesting. Survey crews covered ~4,700 river miles, 22 reservoirs, 62 sand pits, 12 industrial sites, 2 rooftop colonies, and over 16,000 acres of salt flats, counting a grand total of 17,591 ILT in association with 489 different colonies. Just over 62 percent of all adult ILT were counted on the "Lower" Mississippi River (10,960 birds on 770+ river miles). Four additional river systems accounted for 33.3 percent of the remaining ILT, with 11.6 percent on the Arkansas River system (including the Canadian and Cimarron Rivers and the Salt Fork of the Arkansas River), 10.4 percent on the Red River system, 6.9 percent on the Missouri River system, and 4.4 percent on the Platte River system. Lesser numbers of terns were counted on the Ohio River system (1.0 percent), the Trinity River system in Texas (1.0 percent), the Rio Grande/Pecos River system in New Mexico and Texas (0.8 percent), the Wabash River System (0.6 percent), two reservoirs in East Texas (0.3 percent), and the Kansas River system (0.3 percent). A majority of adult terns were counted on rivers (89.9 percent), with much smaller numbers at sand pits (3.6 percent), reservoirs (2.5 percent), salt flats (2.3 percent), industrial sites (1.4 percent), and rooftops (0.3 percent). This report discusses the results of the 2005 survey at three different spatial scales: 1) the entire breeding range for ILT and adjacent breeding populations on the Gulf Coast; 2) regional analyses by major river systems; and 3) individual survey segments (some of which have been combined into geographic segments comprised of more than 1 similar survey segment). Results of the 2005 survey are also compared with historic survey data from 1986 through 2004. The value of historic data for local, regional, and range-wide analyses of population trends is evaluated in the context of this first complete picture of the breeding distribution of ILT. Recommendations are made to 1) increase annual survey coverage for ILT to in...

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Section: Distribution and Abundance Of Interior Least Tern Breeding Pcontrasting

confidence: 60%

Section: Range-wide Survey Methodsmentioning

confidence: 99%

Section: Background and Problem Statementmentioning

confidence: 99%

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Distribution and Abundance of the Interior Population of the Least Tern (Sternula Antillarum), 2005; A Review of the First Complete Range-Wide Survey in the Context of Historic and Ongoing Monitoring Efforts

Lott¹

2006

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“…We found high and low temperatures in the AHR influenced Least Tern nest and brood survival and Piping Plover nest survival more than any other metric we tested. Eggs can be especially impacted by extreme temperatures due to lack of mobility and embryonic development that is sensitive to temperature conditions (Whitman 1988, Thompson et al 1997. Similarly, chicks have a limited ability to thermoregulate before fledging, thus we found Least Tern and Piping Plover brood survival was also susceptible to changes in temperature (Howell 1959, Krogh and.…”

Section: Discussionmentioning

confidence: 70%

Interior Least Tern and Piping Plover nest and brood survival at managed, off-channel sites along the central Platte River, Nebraska, USA 2001-2015

Farrell¹,

Baasch²,

Farnsworth³

et al. 2018

ACE

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“…However, even complete abandonment of this nesting area, which typically supports less than ten breeding pairs, would not have adverse effects on the size or viability of local populations which number over 2,000 breeding pairs in New Jersey and 4,000 breeding pairs on Long Island (Thompson et al 1997). In addition, abandonment of this nesting area is unlikely because this colony has demonstrated a tolerance of, and successfully nested amongst, the high levels of noise and other disturbances currently generated by the operation of the Global Marine Terminal adjacent to the colony and overhead aircraft arriving at and departing from nearby EWR.…”

Section: 8-30mentioning

confidence: 99%

Chapter 16 Natural resources

Bandopadhyay

Ghosh

Carter

2017

Memoirs

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The natural resources of the Andaman–Nicobar Islands and surrounding seas are discussed. Rocks and minerals found on the Andaman Islands include magnetite, pyrite-chalcopyrite, chromite, gold, nickel, sulphur, coal and limestone, but in most cases their concentrations are sub-economic. Lensoid bodies of algal-biohermal limestones of Palaeogene age on Middle Andaman Island are abundant, accessible and of good grade for cement or foundry work. The Neogene limestones are also suitable for this purpose. Basalts and strongly indurated sedimentary rocks, without any overburden, are quarried for construction work. Limited offshore exploration for oil and natural gas shows great promise, but has yet to be developed.

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Least Tern (Sternula antillarum)

Cited by 34 publications

References 0 publications

Distribution and Abundance of the Interior Population of the Least Tern (Sternula Antillarum), 2005; A Review of the First Complete Range-Wide Survey in the Context of Historic and Ongoing Monitoring Efforts

Distribution and Abundance of the Interior Population of the Least Tern (Sternula Antillarum), 2005; A Review of the First Complete Range-Wide Survey in the Context of Historic and Ongoing Monitoring Efforts

Interior Least Tern and Piping Plover nest and brood survival at managed, off-channel sites along the central Platte River, Nebraska, USA 2001-2015

Chapter 16 Natural resources

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