In scientific usage, a phenomenon is any event that is observable, however common it might be, even if it requires the use of instrumentation to observe, record, or compile data concerning it. In natural sciences, a phenomenon is an observable happening or event.

Phenomena

Fenómenos naturales

Biological Phenomena

Fenómenos biológicos 

Behavior

Comportamiento

Diseases

Enfermedades

Disorders

Desórdenes

Conflicts

Conflictos 

Conflict Management

The sudden death of fish due to natural causes, pollutants, or environmental factors such as the reduction of the dissolved oxygen concentration in a body of water. [<a href="https://lod.nal.usda.gov/nalt/33321">NALT</a>] [<a href="http://aims.fao.org/aos/agrovoc/c_b204fae4">AGROVOC</a>]

Fish Kills

Stress

Estrés

Reproduction

Reproducción

Algal blooms are caused by abnormal increases in the concentration in the water column of certain microscopic algae and algae-like organisms that can cause changes in the color of the water due to the pigments present in the microorganisms. Some of these organisms produce toxins that can be harmful to man, either directly or through the consumption of contaminated seafood. The term "harmful algal bloom" (HAB) is preferred over "red tide" because the blooms are not always red and are not directly associated with tides, and because the term "red tide" applies to many harmless blooms that discolor the water but may exclude many toxic blooms that do not cause water discoloration.
&nbsp;

Las floraciones de algas son causadas por aumentos anormales en la concentraci&oacute;n en la columna de agua de ciertas algas microsc&oacute;picas y organismos similares a las algas que pueden causar cambios en el color del agua debido a los pigmentos presentes en los microorganismos. Algunos de estos organismos producen toxinas que pueden ser da&ntilde;inas para el hombre, ya sea directamente o mediante el consumo de mariscos contaminados. Se prefiere el t&eacute;rmino "floraci&oacute;n de algas nocivas" (HAB) a "marea roja" porque las flores no siempre son rojas y no est&aacute;n directamente asociadas con las mareas, y porque el t&eacute;rmino "marea roja" se aplica a muchas flores inofensivas que decoloran el agua pero puede excluir muchas floraciones t&oacute;xicas que no causan la decoloraci&oacute;n del agua.

Harmful Algal Blooms

Floraciones de algas nocivos

HABs

Red Tides

[<a href="https://lod.nal.usda.gov/nalt/1731">NALT</a>] [<a href="http://aims.fao.org/aos/agrovoc/c_11488">AGROVOC</a>]

Heat Stress

Clima cálido extremo y estrés por calor 

Biological Development

Natural or genetic ability of a pest population that enable individuals to suppress or resist the injurious effects of particular types of pesticides that are toxic to other individuals of that species.

Insecticide Resistance

Pesticide Resistance

The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.