Nature Atlas
Claims this atlas currently marks as unsettled or as tested and found false. A debated fact is one scholars hold competing positions on; a debunked one has been checked against the record and found not to hold. Both are kept in view rather than quietly smoothed over, with the reasoning that put each one where it stands.
251 statements.
Red-tailed Hawk, Population Estimate1000000.000000
Red-tailed Hawk, Species
Standing
Concerns Population Estimate
Currently States 1000000.000000
Wikipedia states the red-tailed hawk population is estimated at about one million in the United States alone; the species also breeds across Canada, Mexico, Central America and the West Indies, so this United States figure understates the true global population, which is not established as a single number in the source consulted.
Source Red-tailed Hawk (Wikipedia)
Reptilia, Member Species/Taxa Count11700
Reptilia, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 11700
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Rhodophyta, Member Species/Taxa Count7100
Rhodophyta, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 7100
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Rhynchocephalia, Member Species/Taxa Count1
Rhynchocephalia, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 1
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Rice Blast Fungus, Scientific NameMagnaporthe oryzae, also called Magnaporthe grisea
Rice Blast Fungus, Species
Standing
Concerns Scientific Name
Currently States Magnaporthe oryzae, also called Magnaporthe grisea
Authors disagree on whether the rice pathogen is named Magnaporthe grisea or Magnaporthe oryzae; the source states both names are in use.
Source Magnaporthe grisea, Wikipedia
Ring-tailed Lemur, Population Estimate2000.000000
Ring-tailed Lemur, Species
Standing
Concerns Population Estimate
Currently States 2000.000000
The formal IUCN Red List category is Endangered, but the article reports a 2017 estimate of as few as 2,000 wild individuals, which the source itself says would place the species far more severely than that formal listing reflects; recorded here as the most specific figure found, not a settled census.
Source Ring-tailed Lemur (Wikipedia)
Riparian Zone, Typical High Temperature (C)23.900000
Riparian Zone, Biomes
Standing
Concerns Typical High Temperature (C)
Currently States 23.900000
23.9C converts the source 75F summer figure. Riparian zones border rivers and streams on every continent and in every climate, so no single figure is fully meaningful; the general freshwater range already used on this biome sibling group is applied here.
Source Climate In A Freshwater Biome (Sciencing)
Riparian Zone, Typical Low Temperature (C)1.700000
Riparian Zone, Biomes
Standing
Concerns Typical Low Temperature (C)
Currently States 1.700000
1.7C converts the source 35F winter figure. Same caveat as temperature-high-c.
Source Climate In A Freshwater Biome (Sciencing)
Riparian Zone, Annual Precipitation (mm)1143.000000
Riparian Zone, Biomes
Standing
Concerns Annual Precipitation (mm)
Currently States 1143.000000
1143mm is the midpoint of the cited source stated 10 to 80 inch range; riparian zones occur along waterways in every climate so no single figure is fully meaningful.
Source Freshwater Biome (Earth Eclipse)
River, Annual Precipitation (mm)1143.000000
River, Biomes
Standing
Concerns Annual Precipitation (mm)
Currently States 1143.000000
1143mm is the midpoint of the cited source stated 10 to 80 inch (254mm to 2032mm) freshwater range. Rivers exist on every continent and in every climate, so no single figure is fully meaningful; this matches the identical reasoning and source already used on the Freshwater biome entity.
Source Freshwater Biome (Earth Eclipse)
Rock Pigeon, Population Estimate17000000.000000
Rock Pigeon, Species
Standing
Concerns Population Estimate
Currently States 17000000.000000
Wikipedia cites an estimated 17 to 28 million wild and feral rock pigeons in Europe alone, with a worldwide figure (including feral urban populations) reported as high as 120 million; this atlas records the lower, more conservative regional estimate rather than the wide worldwide range.
Source Rock Pigeon (Wikipedia)
Rodentia, Member Species/Taxa Count2550
Rodentia, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 2550
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Rotifera, Member Species/Taxa Count2000
Rotifera, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 2000
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Salmoniformes, Member Species/Taxa Count220
Salmoniformes, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 220
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Salt Marsh, Typical High Temperature (C)23.900000
Salt Marsh, Biomes
Standing
Concerns Typical High Temperature (C)
Currently States 23.900000
23.9C (75F) is the average August maximum at a single well-documented site, the Carpinteria Salt Marsh Reserve in coastal southern California, not a global figure; salt marshes occur from subtropical to subarctic coasts.
Source Environmental Setting (UCSB Carpinteria Salt Marsh Reserve)
Salt Marsh, Typical Low Temperature (C)4.000000
Salt Marsh, Biomes
Standing
Concerns Typical Low Temperature (C)
Currently States 4.000000
The source states only that the coldest month's average minimum stays above freezing, without an exact figure; 4C is a reasoned representative value for that same southern California site, not a measured global low.
Source Environmental Setting (UCSB Carpinteria Salt Marsh Reserve)
Salt Marsh, Annual Precipitation (mm)452.000000
Salt Marsh, Biomes
Standing
Concerns Annual Precipitation (mm)
Currently States 452.000000
452mm (17.8 inches) is this same reserve's 1967-1979 average, which itself ranged from about 199mm to 932mm year to year; salt marshes on wetter coasts receive far more.
Source Environmental Setting (UCSB Carpinteria Salt Marsh Reserve)
Scyphozoa, Member Species/Taxa Count200
Scyphozoa, Taxa
Standing
Concerns Member Species/Taxa Count
Currently States 200
Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.
Source Catalogue of Life
Sea Ice, Annual Precipitation (mm)250.000000
Sea Ice, Biomes
Standing
Concerns Annual Precipitation (mm)
Currently States 250.000000
Upper bound for the central Arctic Ocean and polar-desert regime where most perennial sea ice forms; NOAA states 250 mm or less rather than a single settled figure, in the Arctic Report Card 2025 precipitation section.
Source Precipitation, NOAA Arctic Report Card 2025
Secretarybird, Population Estimate6700.000000
Secretarybird, Species
Standing
Concerns Population Estimate
Currently States 6700.000000
Wikipedia cites a 2016 IUCN estimate ranging from 6,700 to 67,000 individuals, an unusually wide span; the lower, more conservative bound is recorded here rather than a false precise midpoint. The IUCN status itself was raised to Endangered in 2020, after this population figure was published, so a more current count may exist but was not found in this source.
Source Secretarybird (Wikipedia)