Ecosystems

Multimedia

Filter Total Items: 3,213
Sperm Whale just below the surface of the ocean, viewed from above
December 31, 2020

Zoomed image of a Sperm Whale (Physeter macrocephalus)

Zoomed image of a Sperm Whale (Physeter macrocephalus) below the surface, with contrast increased for clarity.

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions
...
Seven white birds viewed from above, at some distance, over a dark ocean
December 31, 2020

Small terns in flight

Zoomed image of small terns in flight.

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions. 

...
Aerial view of five gulls, with grey backs and wings and white heads and tails, flying over the ocean
December 31, 2020

Group of adult and immature Western Gulls (Larus occidentalis)

Zoomed image of a group of adult and immature Western Gulls (Larus occidentalis).

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions. 

...
Humpback whale viewed from above, just breaking the surface, with seabirds in flight nearby
December 31, 2020

Humpback Whale and shearwaters feeding in southern California

Zoomed image of a Humpback Whale (Megaptera novaeangliae) and a group of shearwaters feeding in southern California.

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions. 

...
Long, skinny Cuvier's Beaked Whale swimming just below the ocean surface, viewed from above
December 31, 2020

Cuvier’s Beaked Whale (Ziphius cavirostris)

Zoomed image of a Cuvier’s Beaked Whale (Ziphius cavirostris) below the surface.

The Seabird Studies Team at the USGS Western Ecological Research Center is conducting aerial photographic surveys of the ocean off central and southern California to create comprehensive maps of seabird and marine mammal distributions. 

...
December 31, 2020

USGS End of Year Accomplishments 2020

A 2020 year in review of the many accomplishments of the US Geological Survey. A year that began with seismic activity in Southwest Puerto Rico, to the first-ever public testing of USGS ShakeAlerts, USGS scientists and technicians helped to track storm data during the 2020 Atlantic Hurricane season. Mapping in high resolution the Nation's rivers and streams, to precise

Tall snow-covered incense cedar amid other snowy evergreens
December 29, 2020

Incense cedar in the Sierra Nevada

Incense cedar in the Sierra Nevada

Cluster of bats on a cave wall.
December 18, 2020

Cluster of cave myotis bats (Myotis velifer) on cave wall in Texas

Cluster of cave myotis bats (Myotis velifer) on cave wall in Texas.

Productivity of Black Oystercatchers in Southwest Alaska
December 16, 2020

Productivity of Black Oystercatchers in Southwest Alaska

The black oystercatcher, a keystone species in nearshore ecosystems, plays an important role in structuring nearshore systems and is highly susceptible to human disturbance. Current inventory and monitoring efforts may not adequately address the information needs for estimating long-term trends for this species. To address these issues, the goal of this research is to

...
 Standard Fish Sampling Techniques and Environmental DNA for Characterizing Fish Relative Abundance,
December 15, 2020

Standard Fish Sampling Techniques

Examining environmental deoxyribonucleic acid (eDNA) in water samples has demonstrated promise for identifying fish species present in water bodies. However, whether or not this same approach can be used to assess relative abundance, biomass, and species composition in large (greater than [>] 200-hectare) waterbodies is unclear. This research compared

...
November 30, 2020

La encrucijada del fuego silvestre

La relación entre la gente y los incendios forestales siempre ha sido paradójica: el fuego es esencial como proceso ecológico y herramienta de gestión, pero también puede ser perjudicial para la vida y la propiedad. En consecuencia, los regímenes de incendios se han modificado a lo largo de la historia, mediante quemas intencionales para promover sus beneficios o mediante

November 30, 2020

Wildfire at the Crossroads

The relationship between people and wildfire has always been paradoxical: fire is an essential ecological process and management tool but can also be detrimental to life and property. Consequently, fire regimes have been modified throughout history through both intentional burning to promote benefits and active suppression to reduce risks. Reintroducing fire and its